(6-4x)(x-2)+3x
=6x-12-4x+8x+3x
=5x-4
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No. 3x plus 2x = 5x. 3x multiplied by 2x = 6x²
9x2 + 24xy + 16y2 = 9x2 + 12xy + 12xy + 16y2 = 3x(3x + 4y) + 4y(3x + 4y) = (3x + 4y)*(3x + 4y) = (3x + 4y)2
(3x-2)(2x+7) is the same as 6x^2 +17x -14 when the brackets are multiplied out
Equivalent to what? "3x = 3 + x" is an equation which can be equivalent to other equations, but none is mentioned.
It is equivalent to 15x+10