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Expand (2x+1)(x+4)

(2x+1)(x+4) 2x²+8x+x+4 2x²+9x+4

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The line AB has equation 3x +5y = 7 . Find the gradient of AB.

Solve (x + 2)(x+3) = (2x+4)

What is solution by substitution?

Show that (x + 1)(x + 2)(x + 3) can be written in the form ax3 + bx2 + cx + d where a, b, c and d are positive integers.

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