source : wyzant.com

## Using the quadratic formula to solve 7×2 – x = 7, what are the values of x?

Katie L.

asked 11/06/18

a)

b)

c)

d)

##
1 Expert Answer

By:

Ty D.

answered 11/06/18

Tutor

New to Wyzant

Educator with 10+ years of Collegiate and K-12 experience

7×2 – x – 7 = 0

a = 7, b = -1, c = -7

## Still looking for help? Get the right answer, fast.

OR

Find an Online Tutor Now

Choose an expert and meet online.

No packages or subscriptions, pay only for the time you need.

¢

€

£

¥

‰

µ

·

•

§

¶

ß

‹

›

«

»

<

>

≤

≥

–

—

¯

‾

¤

¦

¨

¡

¿

ˆ

˜

°

−

±

÷

⁄

×

ƒ

∫

∑

∞

√

∼

≅

≈

≠

≡

∈

∉

∋

∏

∧

∨

¬

∩

∪

∂

∀

∃

∅

∇

∗

∝

∠

´

¸

ª

º

†

‡

À

Á

Â

Ã

Ä

Å

Æ

Ç

È

É

Ê

Ë

Ì

Í

Î

Ï

Ð

Ñ

Ò

Ó

Ô

Õ

Ö

Ø

Œ

Š

Ù

Ú

Û

Ü

Ý

Ÿ

Þ

à

á

â

ã

ä

å

æ

ç

è

é

ê

ë

ì

í

î

ï

ð

ñ

ò

ó

ô

õ

ö

ø

œ

š

ù

ú

û

ü

ý

þ

ÿ

Α

Β

Γ

Δ

Ε

Ζ

Η

Θ

Ι

Κ

Λ

Μ

Ν

Ξ

Ο

Π

Ρ

Σ

Τ

Υ

Φ

Χ

Ψ

Ω

α

β

γ

δ

ε

ζ

η

θ

ι

κ

λ

μ

ν

ξ

ο

π

ρ

ς

σ

τ

υ

φ

χ

ψ

ω

ℵ

ϖ

ℜ

ϒ

℘

ℑ

←

↑

→

↓

↔

↵

⇐

⇑

⇒

⇓

⇔

∴

⊂

⊃

⊄

⊆

⊇

⊕

⊗

⊥

⋅

⌈

⌉

⌊

⌋

〈

〉

◊

Using the quadratic formula: number of solutions… | Khan Academy – Sal determines how many solutions the equation x²+14x+49=0 has by considering its quadratic formula, and more specifically, its discriminant.Solve quadratic equations using a quadratic formula calculator. Calculator solution will show work for real and complex roots. Uses the quadratic formula to solve a second-order polynomial equation or quadratic equation. Shows work by example of the entered equation to find the real or complex root…7×2 – x – 7 = 0. using interval notation to show intervals of increasing and decreasing and postive and negative.

Quadratic Formula Calculator | Examples using the quadratic formula – Rewrite the quadratic in standard form using h and k. Example 9: Solving a Quadratic Equation with the Quadratic Formula. Because the square root does not simplify nicely, we can use a calculator to approximate the values of the solutions.Here are the steps required to solve a quadratic using the quadratic formula Step 1: To use the quadratic formula, the equation must be equal to zero, so move the -5 back to the left hand side. Step 2: Identify a, b, and c and plug them into the quadratic formula.This page will show you how to use the quadratic formula to get the two roots of a quadratic equation. Fill in the boxes to the right, then click the button to see how it's done. It is most commonly note that a is the coefficient of the x2 term, b is the coefficient of the x term, and c is the constant…

Using the quadratic formula to solve… | Wyzant Ask An Expert – c is the value, which is -7. This means we can substitute those into our formula and get (1 +- √-1² – 4 × 7 × -7)/2 × 7 The way I like to solve this is by figuring out the part inside This site is using cookies under cookie policy. You can specify conditions of storing and accessing cookies in your browser.Using the Quadratic Formula: An Excercise. The easiest way to interpret quadratic functions is to break it down and simplify it into its parent In order to properly solve this equation and simplify it down using the quadratic formula, you must first determine the values of a, b, and c in the formula…How the quadratic formula works: For any quadratic equation ax² + bx + c = 0, the solution is . In the case of our equation 7x² – x = 7, first we need to Identify the values of a, b, and c. a = 7, b = -1, and c = -7. Plug these into our quadratic formula and solve. There are two values for x: (1+√197)/14 and…