Question

(i) (3x + 5) (3x + 5) using sutiable identities find the products
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Answer 1

Answer:

(3x+5)(3x+5)

formula is (a+b)(a+b)

=a^2+b^2+2ab

so

(3x)^2+(5)^2+2×3x×5

9x^2+25+30x ANS

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Answer 2

HERE IS YOUR ANSWER:-

$(3x + 5)(3x + 5) \\ \\ \\ \\ = > {(3x + 5)}^{2} \\ \\ we \: know \: that \: {(a + b)}^{2} = {a}^{2} + 2ab + {b}^{2} \\ \\ so \: using \: this \: identity \: in \: this \: \: we \: get \\ \\ = > 9 {x}^{2} + 2 \times 3x \times 5 + 25 \\ \\ \\ \\ = > 9 {x}^{2} + 30x + 25$

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