Use the Remainder Theorem to divide 5x2 + 9x – 2 by x + 3. What is the remainder?A.40B.-44C.16D.-20SUBMITarrow_backPREVIOUS
Question
Use the Remainder Theorem to divide 5x2 + 9x – 2 by x + 3. What is the remainder?A.40B.-44C.16D.-20SUBMITarrow_backPREVIOUS
Solution
The Remainder Theorem states that if a polynomial f(x) is divided by x - k, the remainder is r = f(k).
In this case, we are dividing by x + 3, so we can rewrite this as x - (-3). Therefore, k = -3.
We substitute -3 into the polynomial:
5(-3)^2 + 9(-3) - 2 = 5(9) - 27 - 2 = 45 - 27 - 2 = 16
So, the remainder when 5x^2 + 9x - 2 is divided by x + 3 is 16. The answer is C.16.
Similar Questions
What is the remainder when 3 is synthetically divided into the polynomial -x2 + 5x - 9?A.0B.-6C.-3D.5SUBMITarrow_backPREVIOUS
When dividing the polynomial by long division, identify the numeric remainder.(–2x3 – 4x2 + 5) ÷÷ (x + 3)
When 9x2−6x+2 is divided by x, the remainder is
Use long division to find the quotient and remainder when 2x5 + 4x4 − x3 − x2 + 5 is divided by 2x2 − 1.
A certain number when divided by 45 leaves a remainder 31. What is the remainder if the same number be divided by 15?
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.