# Hard algebra question! Please help?

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If #2p^2-3p-4=0# and #2q^2-3q-4=0 # (p does not equal to 0), find the value of #2p+2q# and #p^2q^2#

If

##### 2 Answers

I tried this...the procedure should be ok...BUT check my maths anyway.

#### Explanation:

Have a look:

#### Explanation:

Quick way: You may use Vieta's Formulas

First notice that p and q have the exact same equation and thus will have the same solution,

proof:

Thus

Long way:

Use the quadratic formula:

solve for

Sub in a =2, b = -3 and c = -4

q has the exact same equation and is thus have the same solution: