Mental Maths Class 7 Algebra

Asked by RAJANYA MONDAL · The Level field School

What is the whole square of x^2+3x+2?

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Answer: A. x^4+6x^3+13x^2+12x+4

Square term by term: (x^2 + 3x + 2)^2 = x^4 + 9x^2 + 4 + 2(3x^3) + 2(2x^2) + 2(6x) = x^4 + 6x^3 + 13x^2 + 12x + 4. Option b swaps the 6 and 13.

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