exam Maths Puzzle Numerical Ability

1000r^3-1=0

(15/16x-1)^2=0

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exam Other Question

Please help solve.

Find an equation of each line, and write it in slope-intercept form.

Trough (-7,2) and parallel to 3x +5y=6 The equation says to factor completely :9x^2-25. will someone please help me?