exam
Maths Puzzle
Numerical Ability
2p-q=2
2p+3q=22
Equation 1 2p-q=2 Multiply by 3 so, 6p-3q=6
6p-3q = 6
2p+3q = 22
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8p = 28/8
p = 3/8?? looks wrong from here.
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exam Other Question
Perform the indicated operation
(6x^2 + 7x - 8)-(-9x^2 + 10)
a)-3x^2 + 7x + 2 b)15x^2 + 7x - 18 c)15x^2 - 3x - 8 d)-3x^2 - 3x - 8
What are the steps to solving this kind of problem? I can solve problems other ways like using FOIL and problems with a formula for two multiplied things, but when there are three to multiply, I have no idea. Please help me!
(13y-5)(2y+4)(y+2)