Hard algebra question! Please help?
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: