Answer:
64
Step-by-step explanation:
To complete the square
add ( half the coefficient of the b- term )² to b² + 16b
b² + 2(8)b + 8²
= b² + 16b + 64 = (b + 8)²
Answer:
Step-by-step explanation:
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To answer your question it would be 60
Answer:
-7y+8x
Step-by-step explanation:
-2y-x-5y+9x