please answer this all
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a) (12x)×(7x)=96x (b) (13x)x(5x)=65 (c) (7x)x(1x)= 7x
smartboy100:
its wrong it will not be in this process
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1》 (5x+7)×(3x+4)
=5x(3x+4)+7(3x+4)
=15x^2 +20x+21x+28
=15x^2 +41x+28
2》 (4x+9)×(x-6)
=4x(x-6)+9(x-6)
=4x^2 -24x+9x-54
=4x^2 -15x-54
3》 (2x+5)×(4x-3)
=2x(4x-3)+5(4x-3)
=8x^2 -6x+×20x-15
=8x^2 +14x-15
plz mark.
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