Please check my math work?

Question

12. simplifying

(2x + 4)(3x - 1)

6x-2x+12x-1=

16x-1

13. simplifying

(16^2 + 8x – 4) / (4)

I have no Idea how to do this? can someone walk me through this?

Answer 1

(2x+4)(3x-1)

(6x^2-2x+12x-1 (you forgot the ^2 on 2x X 3x)

6x^2+10x-1

(16x^2+8x-4)/ 4

=4(4x^2+2x-1)/4

=4x^2+2x-1

Answer 2

the first one hdould be 6x squared. the answer for the second one is  64+2x-1. Its just like division but with exponents just add the correct x's with numbers

Answer 3

12j. Should be 6x^2 - 2x + 12x - 4 = 6x^2 + 10x - 4

13. Divide every term by 4 and get:

4x^2 + 2x - 1

Answer 4

(2x + 4)(3x - 1)

sydneybl... here it is

=> (2x + 4)(3x - 1)

=> 6x² - 2x + 12x - 4

=> 6x² + 10x  - 4  ÃƒÂ¢Ã‚—„ Ans

13). (16^2 + 8x – 4) / (4)

You forget the x²

(16x² + 8x – 4) / (4)

the numerator is divisible by 4

so 16x²/4  + 8x/4   -4/4

=> 4x²  +  2x  -  1 ◄ Ans



Hope this helps