book Maths Puzzle Numerical Ability

evaluate the function for the indicated value: f(x)=x2+2x-7 find f(-4)

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book Other Question

Find all values of w satisfying the equation:

3w/w - 2 = negative 27/w^2 - 8w + 12 How would you find an answer to a problem like this 5(3x+8)=175