Expand and simplify (2x+5)(x^2 + 3x -1)
The answer should be 2x3 + 11x2 +13x - 5
Remeber to multipy both brackets together, and collect like terms. (Watch out for the minus sign)
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The point P has coordinates (3,4), Q has the coordinates (a,b), a line perpendicular to PQ is given by the equation 3x+2y=7. Find an expression for b in terms of a
