Mathhelpppppp
posted by sarah on .
1)when a certain polynomial is divided by x  3, the quotient is x^2+2x5 and the remainder is 3. what is the polynomial
2) Find each quotient and remainder. Assume the divisor is not equal to zero.
a)(2x^2+29xx^340)/(3+x)
b)(6+7x11x^22x^3)/(x+9)
c)(x^32x^2+4x+150/(x^2+2x3)
d)(3x^3+2x^211x12)/(x+1)
e)(x^2+x^2y9xy^29y^3)/(x+y)

1)
P = Your polynome
P / ( x 3 ) = x ^ 2 + 2 x  5  3 / ( x  3 ) Multiply both sides by ( x  3)
P = ( x ^ 2 + 2 x  5 ) * ( x  3 )  3 * ( x  3 ) / ( x  3 )
P = x * x ^ 2 + x * 2 x  5 * x  3 * x ^ 2  3 * 2 x  (  3 ) * 5  3 * 1
P = x ^ 3 + 2 x ^ 2  5 x  3 x ^ 2  6 x + 15  3
P = x ^ 3  x ^ 2  11 x + 12
2 )
Go on :
calc 101 dot com
when page be open click option :
long division
On this site you can do all yourdivisions.