# math

what is the answer to 12x^2-18x-21

1. 👍 0
2. 👎 0
3. 👁 102
1. the only thing I can see is to take out a common factor of 3

12x^2-18x-21
= 3(4x^2 - 6x - 7)

the trinomial does not factor

1. 👍 0
2. 👎 0
posted by Reiny

## Similar Questions

Can you check the following problems? 4. x^2 - 10x +25 = 9 x^2 - 10x + (25 -9) = 9 - 9 x^2 - 10x + 16 = 0 (x - 8)(x-2) = 0 x - 8 = 0, x - 2 = 0 x = 8, x = 2 5. x^2 - 6x + 9 = 49 x^2 - 6x + ( 9 - 49) = 49 - 49 x^2 - 6x - 40 = 0 (x

asked by Alexis on November 1, 2016
2. ### Algebra 1

1) what is the simplified form of (x-2)(2x+3)? Use the distributive property. A) 2x^2-x-6 B) 2x^2-6 C)2x^2-7x-6 D) 2x^2 +x-6**** 2) what is the simplified form of (3x+2)(4x-3) use a table. A)12x^2+18x+6 B) 12x^2+x-6 C)

asked by Tris on February 9, 2015
3. ### math,algebra

(3^-1X^3)^2 x 12X^5 my work: 3/2X^6 x 12X^5= 36/2=18X^11 but the answer was 4/3X^11

asked by Chris on September 23, 2014
4. ### Algebra

What polynomial could you subtract from 5x^3 - 12x - x^2 + 9 - 12x^5 - 6x^4 to give a difference of 19 + 8x^3 - 18x - 19x^5 - 2x^2 - 8x^4? Is the answer k (the polynomial) = 7x^5 + 2x^4 - 3x^3 + x^2 + 6x - 28?

asked by Anonymous on October 14, 2014

What polynomial could you subtract from 5x^3 - 12x - x^2 + 9 - 12x^5 - 6x^4 to give a difference of 19 + 8x^3 - 18x - 19x^5 - 2x^2 - 8x^4? Is the answer k (the polynomial) = 7x^5 + 2x^4 - 3x^3 + x^2 + 6x - 28?

asked by Anonymous on October 15, 2014

Add or Subtract (Radicals) { this means squared 1.3{2 + 4{2 Answer: 7{2 2. 8{3 + 3{3 Answer: 11{3 3. 7{5 - 3{5 Answer: 4{5 4. 8{2 - 5{2 Answer: 3{2 5. 6{x + 7{x Answer: 13{x 6. 9{y + 3{y Answer: 12{y Multiply 7. -3x^2(4x^2-3x-5)

asked by Joy on January 20, 2009
7. ### Algebra

What polynomial could you subtract from 5x^3 - 12x - x^2 + 9 - 12x^5 - 6x^4 to give a difference of 19 + 8x^3 - 18x - 19x^5 - 2x^2 - 8x^4?

asked by Anonymous on October 19, 2014
8. ### Algebra

5x^3 - 12x - x^2 + 9 - 12x^5 - 6x^4 - k = 19 + 8x^3 - 18x - 19x^5 - 2x^2 - 8x^4 k = 7x^5 + 2x^4 - 3x^3 + 6x - 10?

asked by Anonymous on October 21, 2014
9. ### Algebra

2(3x - 7) + 4 (3 x + 2) = 6 (5 x + 9 ) + 3 how will solve it? well you first multiply it out: 6x-14+12x+8=30x+54+3 you combine like terms 18x-6=30x+57 -12x=63 x=-63/12

asked by James on May 22, 2007
10. ### algebra

Factor completely with respect to the integers. I just need to see if I can simplify or factor the answers I got even further. 1. x^3 + 64 Answer: (x+4)(x^2-4x+16) Can this simplify any? 2. 8x^3 - 64 Answer 8(x-2)(x^2+2x+4) 3.

asked by anonymous on January 10, 2007

More Similar Questions