exam Maths Puzzle Numerical Ability

Multiply

8pq^2(2pq-3p+5q)

Thank you, These problems have me so confused.

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exam Other Question

Are the following lines parallel, perpendicular, or neither?
L1 with equation x - 7y = 21
L2 with equation 7x + y = 7
A) Parallel
B) Perpendicular
C) Neither a candy jar has red and black licorice sticks. There are 12 more red licorice sticks than black. If jorge chooses one licorice stick, without looking, there is a 60% probability that it is red. How many red licorice sticks are in the candy jar?