Question

for the quadratic equation x2+6x=16 ,what should be the third term to make LHS a complete square
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Answer 1

Step-by-step explanation:

2x+6x=16(adding2x and 6x)

8x=16

x=16/8

x=2

Answer 2

Answer:

(3)²

Step-by-step explanation:

x²+ 6x= 16

(x)² + 2(x)(3) + (3)² = 16 + (3)²

(x + 3)² = 25

taking square root on both sides

x+ 3 = 5

x= 5-3

x= 2