Question

-5x^2-456=-80x-1 for completing square with intermediate step in the form of (x+a)^2

Answer 1

Answer: -27 = (x - 8)²

Explanation:

-5x² - 456 = -80x - 1

-455 = 5x² - 80x added 5x² and 1 to both sides

-91 = x² - 16x divided both sides by 5

↓

`(-16)/(2)=-8`

-91 + 64 = x² - 16x + (-8)² added (-8)² = 64 to both sides

-27 = (x - 8)²