Factorise 2x^2+7x+3
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2x²+7x+3
=2x²+(x+6x)+3
=(2x²+x)(6x+3)
=x(2x+1)+3(2x+1)
= (x+3)(2x+1)
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2x²+6x+x+3
= 2x(x+3)+1(x+3)
= (x+3)(2x+1)
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