Question

What is equivalent to
x2+ 14x = -13​

Answer 1

box 1 = 7

box 2 = 36

box 3 = -1

box 4 = -13

Explanation:

Plato/Edmentum

Answer 2

X= 1 AND 13

Explanation:

x2+14x = -13

by completing the square method

you add the square of half the coefficient of b to both sides

which is (14/2)^2

x^2+14x+(7^2) = -13 +(7^2)

x^2 + 7^2 = -13 + 49

x^2 + 7^2 = 36

(x + 7)^2 = 36

find the square root of both sides

(x+7) = + or - 6

x=7-6 ; 1

or

x= 7+6 ; 13