49x^2 -_x + 16
Can someone help with the missing number
2 answers:
Answer:
Step-by-step explanation:
4x² + 28x + 49
4x² + 14x + 14x + 49
2x(2x) + 2x(7) + 7(2x) + 7(7)
2x(2x + 7) + 7(2x + 7)
(2x + 7)(2x + 7)
(2x + 7)²
= 28
Step-by-step explanation:
I'm guessing this is competing the perfect square
so it's 56
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