The question 36+1 3{}+{}+{}+{} ()+()​

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)