exam
Maths Puzzle
Numerical Ability
solve by grouping
x^5 + 4x^3 + 7x^2 + 28
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exam Other Question
I need to factor and I do not understand this equation, please help
3a^2(a-b)-6a(a-b)+21(a-b)
1)3(a-b)(a^2-2a+7)
2)(3a-b)(a^2-2a+7)
3)(a-b)(3a^2-6a+21)
4)3(a-b)(a^2-6a+21)
i need a little help subtracting this please!
3
over
x^2+4x+3
minus
1
over
x^2-9