Question

factorise 9x²+2xy+4x²

Answer 1

Answer:

x(13x)+2y

Step-by-step explanation:

9x²+2xy+4x²

= x(9x+4x)+2y

=x(13x)+2y

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but if it was 9x²+2xy+4y²,

then it would be as follows:

(3x)²+2xy+(2y)²

= (3x+2y)²  (using formula (a+b)²=a²+b²+2ab)

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Answer 2

$9x ^{2} + 2xy + 4x \] ^{2}$

=

$9x ^{2} + 4x ^{2} + 2xy$

=

$13 x^{2} + 2xy$