simplify the product (2u-4)(u^2+2u-7) pls don't just give me the answer bc i know the answer but can you pls explain how you got the answer

Multiply 2 2 by − 1 - 1. Multiply − 1 - 1 by 8 8. Simplify by adding terms. Tap for more steps... Subtract 6 u 2 6 u 2 from − 3 u 2 - 3 u 2. Add − 9 u 2 - 9 u 2 and 5 u 2 5 u 2. Subtract 2 u 2 u from − 5 u - 5 u. Subtract 2 u 2 u from − 7 u - 7 u. Simplify by adding and subtracting.

Step-by-step explanation:

o find the product of two monomials multiply the numerical coefficients and apply the first law of exponents to the literal factors. Do you remember the first law of exponents? Multiply 5 times 3 and add the exponents of x. Remember, if an exponent is not written, an exponent of one is understood. Recognize polynomials.

2 • (u - 2) • (u2 + 2u - 7)

Step-by-step explanation:

2.1     Pull out like factors :

  2u - 4  =   2 • (u - 2)  

Trying to factor by splitting the middle term

2.2     Factoring  u2 + 2u - 7  

The first term is,  u2  its coefficient is  1 .

The middle term is,  +2u  its coefficient is  2 .

The last term, "the constant", is  -7  

Step 1: Multiply the coefficient of the first term by the constant   1 • -7 = -7  

Step 2: Find two factors of  -7  whose sum equals the coefficient of the middle term, which is   2 .

     -7 +   1 =   -6  

     -1  +   7 =   6  

understand that i don't know the answers

will someone answer his question