exam Maths Puzzle Numerical Ability

Solve each equation for x.
x^2 +4x+4=7
(Hint: Factor the left-hand side.)

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exam Other Question

Is this equation a linear equation?

y = x2 + 4 Given that a quadratic goes through the points (-1,0), (0.67,0), and (0,-2), find the quadratic that goes through the points and find the solutions.