Question

Simplify : (8m² + 3m – 20) – (9m – 7) + (3m² – 2m + 4)​

Answer 1

2

11m -14m -31 I think so sorry not confirm.

Answer 2

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$\mathtt{\huge{\underline{\red{Answer\: :}}}}$

$\bigstar \green{\bold{ \underline{ \underline{step \: by \: step \: explaination}}}}$

$\: \\ \implies\displaystyle \sf{(8 {m}^{2} + 3x - 20) - (9m - 7) + (3 {m}^{2} - 2m + 4) = 0}$

$\: \\ \implies \displaystyle \sf{(8 {x }^{2} + 3m - 20) - 9m + 7 + 3 {m}^{2} - 2m + 4 = 0}$

$\: \\ \implies \displaystyle \sf{(8 {m}^{2} + 3m - 20) + 3 {m}^{2} - 11m + 11 = 0}$

$\: \\ \implies \displaystyle \sf{8 {m}^{2} + 3m - 20 + 3 {m}^{2} - 11m + 11 = 0}$

$\: \implies \displaystyle \sf{11 {m}^{2} - 8m - 9 = 0}$

$\: \bigstar \boxed{ \underline{ \underline{ \bf{the \: answer \: will \: be \: 11 {m}^{2} - 8m - 9 = 0}}}}$