Question

) x²+10x+2=0. by completing the square method

Answer 1

x² + 10x + 2 = 0

x² + 10x = -2

Divide the coefficient of the x term by 2 and square the result.

( 10/2 )² = 25

Add it to both sides of the equation.

x² + 10x + 25 = -2 + 25

x² + 10x + 25 = 23

( x + 5 )² = 23

x + 5 = ±√23

x = -5 ± √23