Question

Can you pls solve this q. In detail...
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Answer 1

Answer:

hi mate here is ur solution and mark me as brain listed

Answer 2

Question 2 :-

Find the value of

$\sf \: {3x}^{2} y - {2xy}^{2} \: when \: x \: = - 2 \: and \: y \: = - 1$

Answer 2 :-

Given :-

$:\implies \tt \: {3x}^{2} y - {2xy}^{2}$

$\red {\: :\implies \tt \: Put \: x \: = - 2 \: and \: y \: = - 1}$

$:\implies \tt \: 3 {( - 2)}^{2} ( - 1) - 2( - 2) {( - 1)}^{2}$

$:\implies \tt \: - 12 + 4$

$:\implies \tt \: - 8$

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Question 3 :-

$\sf \: Subtract \: {4a}^{2} b + 7a - 2 \: from \: 19a - 10 + {7a}^{2} b$

Answer 3:-

$:\implies \tt \: 19a - 10 + {7a}^{2} b - ( {4a}^{2} b + 7a - 2)$

$:\implies \tt \: 19a - 10 + {7a}^{2} b - {4a}^{2} b - 7a + 2$

$\tt :\implies\: (19a - 7a) \: + (2 - 10) + ({7a}^{2} b - 4 {a}^{2} b)$

$:\implies \tt \: {3a}^{2} b + 12a - 8$

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