exam
Maths Puzzle
Numerical Ability
can someone help me with this please (1/2x-10)(1/2x+10)
thanks a lot.
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exam Other Question
I have a couple...i just dont get this stuff!
(x^3+2x+1)(2x^2-4x-5)
and
(x-2)(x+7)(2x+3)
Solve the following system of equations for the unknown variables.
2x + y = 17
y + z = 6
x – z = 7