Question

What number will complete the square for the following equation:
x² + 8x =6

Answer 1

• 4² = 16

Explanation:

• x² + 8x = 6
• x² +2*x*4 + 4² = 6 + 4²
• (x + 4)² = 22

Number needed is 4² = 16

Answer 2

Solution given:

x² + 8x =6

x²+2.x.4+4²-4²=6

(x+4)²=6+16

(x+4)²=22

so

no needed is 4² or 16.