Question

Evaluate each of the following using identities:। a)
$(5a - 3b)^2$
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Answer 1

HEY MATE HERE IS YOUR ANSWER

$here \: we \: can \: use \: the \: \\ identity \: of$

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

${(5a - 3b)}^{2} = \\ {5a}^{2} - 2(5a)(3b) + {3b}^{2}$

$= 25 {a}^{2} - 30ab + 9 {b}^{2}$

HOPE THIS MAY HELP YOU.....

Answer 2

Answer:

• (a-b) ^2=a^2+b^2-2ab
• (5a-3b) ^2
• 25a^2+9b^2-30ab