Question

factorise the following algebraic expression m²+8m+16​

Answer 1

m²+8m+16

=> m²+4m+4m+16

=> m(m+4)+4(m+4)

=> (m+4)(m+4)

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Answer 2

$m {}^{2} + 8m + 16 \\ = m {}^{2} + 4m + 4m + 16 \\ = m(m + 4) + 4(m + 4) \\ = (m + 4) + (m + 4)$