Question

EXPAND THIS = (13x + 14y - 15p)²
FAST........

Answer 1

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Your answer is ↘↘↘↘↘

We have to use a formula
$( {a} + {b}+ {c} {)}^{2} \: \: \: \: \: = {a}^{2} + {b}^{2} + {c}^{2} + 2(ab + bc + ca)$

Here a= 13 x ,b= 14y and c= -15p

According to the rule,

$\: {a}^{2} + {b}^{2} + {c}^{2} + 2(ab + bc + ca)$

${(13x)}^{2} + ( {14y)}^{2} + ( { - 15p)}^{2} + 2(13x \times 14y + 14y \times ( - 15p) + ( - 15p) \times 13x) \\ \: {(169x)}^{2} + {196y}^{2} + {225p }^{2} + 2(182xy + ( - 210 py\: ) + ( - 195px \: ) \\ \\ answer \: \: \: \: \: \: \: \: \: = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = \\ \: \: \: \: \: \: \: \: \: \: \: \: \: {169x}^{2} + {196y}^{2} + {225p}^{2} + 364xy - 420py - 390px$

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