Question

Help :( math for 8th

Answer 1

She should add 10x to both sides

Explanation:

Answer 2

Explanation:

x² - 10x - 2 = 0 {Add 2 to both sides}

+2 = +2

x² - 10x = 2

Now to find what to add both sides, divide the co-efficient of x by 2

10/2 = 5

Add 5² to both sides

x² - 10x + 25 = 5²

(x - 5)² = 5²

Take square root both sides,

x - 5 = ± 5

x- 5 = 5 ; x - 5 = -5

x = 5+5 ; x = -5 + 5

x = 10 ; x = 0