exam Maths Puzzle Numerical Ability

please help

evaluate

a - absolute vale of b a^2 - ba if a = -3 and b = -4

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exam Other Question

Can someone help me on this problem?

I need to use the distributive property to remove the parentheses in the following expression. I then need to simplify the result if possible.

1/4(20 + 16)

Thanks,
Sher Graph y=(x-5)(2x+7)(3-x)^2(x-7)(x+2)^2, and label all intercepts

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