Find the square of:
[3a+2/5b]
plz thnks my answer too but plz don't forget to answer my this question
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Answers
Answered by
1
Answer:
9a^2 + 12/5 ab + 4/25 b^2
Step-by-step explanation:
(a+b)^2 = a^2 + 2ab + b^2
(3a + 2/5 b)^2 = (3a)^2 + 2(3a)(2/5 b) + (2/5 b)^2
= 9a^2 + 12/5 ab + 4/25 b^2
Answered by
2
Answer:
3a-5b=(3a)^2-(2×3a×5b)+(5b )^2. =9(a^2)-30ab+25(b^2).
Step-by-step explanation:
I have answered it before so you can either see pic or see the written on
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