exam Maths Puzzle Numerical Ability

Multiply: (5x+8)(8x-5)

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exam Other Question

What is the x-intercept and the y-intercept for y=5x - 10? Solve the following equation for x:

5(x - 2)^2 = 3

Express your answer(s) in both "simplified radical" form, and in decimal form.

I came up with x=2+or-sqrt(3/5). Could someone please check this one for me. Thanks.