exam Maths Puzzle Numerical Ability

Please help.
Rewrite the middle term as the sum of two terms and then factor completely.

12w^2 + 19w + 4

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exam Other Question

Write the equation of the line that passes through the points (3,5) and (-1,10) Which of the following assumptions is necessary to apply a nonparametric test of hypothesis using chi-square?
A) Normal population is required
B) Interval scale of measuremen