exam Maths Puzzle Numerical Ability

Find the corresponding y values for x = -4, -3, -2, -1, 0, 1, 2 if y = x^2 + 2x- 3. help this is not sinking in at all.

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exam Other Question

I need help factoring these polynomials completely.

20x squared - 7x - 6

ab - a - b + 1

and -8z squared + 48z - 72 i was wondereing if there were any lessons on your website that shows the following problem: Factoring axsquared+bx+c. I need all the help i can get. thanks.