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Factorize the following $($a$)x^2+7x-30$

Solve the following pair of simultancous equation for $x$ and $Y$ : $x-4y=7$ and $x-2y=7$

Simplify this partial fraction: $\frac{2}{x-3}-\frac{4}{x-1}$

Differentiate the following polynomial: $Y=x^6+2x^4-x^4+5x^3+x^2-x+1$

Differentiate: $Y=e^{**}+sinx$