Question

factorise the following expressions 49 y square + 84 y z + 36 Z Square​

Answer 1

49y^2+84yz+36z

By using a^2+b^2+2ab=(a+b)^2

=(7y)^2+2×7a×6z+(6z)^2

=(7y+6z)^2

=(7y+6z)(7y+6z)

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Answer 2

49y²+84yz+36z²

identity 1 (a+b)=a²+2ab+b²

(7y)²+2×7y×6z+(6z)²

(7y+6z)²=(7y+6z) (7y+6z)