Question

multiply the following (3-4x+7x^2) by (3x+7)​

Answer 1

Answer:

25/22 is the correct answer .

Answer 2

Answer:

21$x^{3}$ + 37$x^{2}$ - 19x + 21

Step-by-step explanation:

   (3-4x+7$x^{2}$) * (3x+7)​

multiply 3x with 1st bracket and the 7 with 1st bracket and add them.

(3-4x+7$x^{2}$) * 3x  +  (3-4x+7$x^{2}$) * ​7​

after multiply we get,

9x - 12$x^{2}$ + 21$x^{3}$ + 21 - 28x + 49$x^{2}$

now by adding or subtracting the similar terms we get final ans

21$x^{3}$ + 37$x^{2}$ - 19x + 21