Simplify square root of 3 times square root of 21 . (1 point)

Group of answer choices
- square root of 24
- square root of 63
- 3 square root of 7
- None of the above

3 square root of 7

Step-by-step explanation:

square root of 21 can also be written as square root of 3 * square root of 7

the square root of 3 that's outside multiplies with the new square root of 3 giving square root of 9 which is 3, so 3 square root of 7

i think c. but don't trust it.

step-by-step explanation:

(x3 + 6x2 + 2x - 6) • (x - 1)

step-by-step explanation:

polynomial long division :

3.2     polynomial long division

dividing :   x4+5x3-4x2-8x+6

                              ("dividend")

by         :     x-1     ("divisor")

dividend     x4   +   5x3   -   4x2   -   8x   +   6

- divisor   * x3     x4   -   x3            

remainder         6x3   -   4x2   -   8x   +   6

- divisor   * 6x2         6x3   -   6x2        

remainder             2x2   -   8x   +   6

- divisor   * 2x1             2x2   -   2x    

remainder               -   6x   +   6

- divisor   * -6x0               -   6x   +   6

remainder                     0

quotient :   x3+6x2+2x-6   remainder:   0