exam Maths Puzzle Numerical Ability

find each product

2xy(3x�-xy+7)

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exam Other Question

Evaluate f(-3). f(x)={-x^2+2x, x<1
{-2x+3, x>1 without drawing the graph, I'm supposed to determine how many x-intercepts the parabola has and whether or not it's vertex lies above ,below or on thex-axis and I'm supposed to sho