Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$p ^ { 2 } + 6 p + 8 \quad q ^ { 2 } - 10 q + 21$$

Evaluate

$p^{2}+6p+8q^{2}-10q+21$

Differentiate w.r.t. p

$2\left(p+3\right)$

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