claycarrina claycarrina

24-02-2020
Mathematics

contestada

Use the quadratic formula to solve the equation x2+7x

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thamimspartan thamimspartan

02-03-2020

The solution of the equation x2+7x is 0, -7 using the quadratic formula.

Step-by-step explanation:

x2 + 7x = 0

-b ± √ b2 - 4(ac)/ 2a

substitution,

a = 1, b = 7, c = 0

= -7 ± √(7)2 - 4(1 x 0) / 2 x 1

= - 7 ± 7 / 2

x = 0 , -7

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