Question

factorise the following:- t²+10t+21
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Answer 1

Step-by-step explanation:

t^2 + 10t + 21

=t^2 + 7t+ 3t +21

=t(t+7) +3 (t + 7)

=(t + 7) ( t + 3)

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Answer 2

Step-by-step explanation:

t²+10t+21

t²+7t+3t+21

t(t+7)+3(t+7)

(t+7)(t+3)