Question

(5a-4b)^2
How to solve this problem ​

Answer 1

Answer:

(5a)^2-2*5a*4b+(4b)^2

25a^2-40ab+16b^2

Step-by-step explanation:

This is according to the algebric formula.

Thanku

Answer 2

HELLOW THERE,

YOUR QUESTION:

${(5a - 4b)}^{2}$

ANSWER:

BY USING THE IDENTITY

${(a - b)}^{2} = {a}^{2} - 2ab \: + {b}^{2}$

Therefore,

${(5a)}^{2}- 2(5a)(4b) + {(4b)}^{2} \\ = > 25 {a}^{2} - 40ab + 16 {b}^{2}$

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