exam
Maths Puzzle
Numerical Ability
what is g(x)=-2x
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exam Other Question
If P(y)=10y^2+4
Q(y)=y^3-5y^2+3y+7
Find 3P(y)+q(y)
3(10y^2+4+y^3-5y^2+3y+7)
5y^2+11+y^3+3y
5y^2+11+y^3+3y
Is this correct?
Proof of the zero rule of exponents. Why a^0=1 ?