Home > Algebra > Monomial Factors of Polynomials

Can #y=3x^2-39x-90 # be factored? If so what are the factors ?

Answer 1

Factor y = 3x^2 - 39x - 90

Ans: y = (x +2)(x -15)

I use the new AC Method to factor trinomials (Socratic Search) #y = 3Y = 3(x^2 - 13x - 30)#. Factor #Y = x^2 - 13x - 30)#. Find 2 numbers knowing sum (b = -13) and product (c = -30) Factor pairs of (-30) --> (-2, 15). This sum is 13 = -b. Then the opposite sum gives 2 numbers: 2 and - 15.

Factored form: #y = 3(x + 2)(x - 15) =#

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Eli Assouline

Yes, the quadratic expression ( y = 3x^2 - 39x - 90 ) can be factored. The factors are ( y = 3(x + 3)(x - 10) ).

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 3

Hazel Anglin

Yes, the quadratic equation y = 3x^2 - 39x - 90 can be factored. The factors are y = 3(x + 3)(x - 10).

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.