exam Maths Puzzle Numerical Ability

solve the equation for x by factoring the left-hand side.

x squared + 4x + 4 = 7

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exam Other Question

A small firm produces both AM and AM/FM car radios. The AM radios take 15 h to produce. The M/FM radios take 20 h. The # of production hours is limited to 300 h per week. The plant please help me answer this problem
n+9
_____
n^2

times

6n^2
_____
n^2-8