(b+4)²+4(b+4)-21 factorise it please
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(b+4)²+4(b+4)-21 factorise it please
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Answer:
I hope
Step-by-step explanation:
b square+2b×4+4square+4b+16-21
b square+8b+4 square+4b-5
b square+12b+4square-5
Hope it helps!