Math, asked by kolisulbha473, 7 months ago

factorise the following x²+6x+9 and x²+2x-15 and 49a²+70ab+25b² and 25x²-49y² and x²+6x+9​

Answers

Answered by ayasmitamanna146
0

Step-by-step explanation:

x^2+6x+9

=x^2+3^2+2×x×3

=(x+3)^2

x^2+2x-15

=x(x+2)-15

49a^2+70ab+25b^2

=(7a)^2+(5b)^2+2×7a×5b

=(7a+5b)^2

25x^2-49y^2

=(5x)^2-(7y)^2

=(5x+7y)(5x-7y)

x^2+6x+9

=x^×+2×3×x3^2

=(x+3)^2

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