Question

let's do sum applying suitable Identity :-
I) (5x-4y)²
please solve full question.​

Answer 1

Answer:

(5x-4y)2

25x2+16y2-40xy

is the required answer of this question

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Answer 2

${(5x - 4y)}^{2} \\ identity \\ = {(x - y)}^{2} \\ = {x}^{2} - 2xy + {y}^{2} \\ = {(5x)}^{2} - 2.5x.4y + {(4y)}^{2} \\ 25 {x}^{2} - 10x + 8y + 16 {y}^{2}$

Ello ♥