Will give brainliest! help pls :)

Step-by-step explanation:

# be careful #STEP

1

:

Equation at the end of step 1

((2•5x2) - 21x) - 10

STEP

2

:

Trying to factor by splitting the middle term

2.1 Factoring 10x2-21x-10

The first term is, 10x2 its coefficient is 10 .

The middle term is, -21x its coefficient is -21 .

The last term, "the constant", is -10

Step-1 : Multiply the coefficient of the first term by the constant 10 • -10 = -100

Step-2 : Find two factors of -100 whose sum equals the coefficient of the middle term, which is -21 .

-100 + 1 = -99

-50 + 2 = -48

-25 + 4 = -21 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -25 and 4

10x2 - 25x + 4x - 10

Step-4 : Add up the first 2 terms, pulling out like factors :

5x • (2x-5)

Add up the last 2 terms, pulling out common factors :

2 • (2x-5)

Step-5 : Add up the four terms of step 4 :

(5x+2) • (2x-5)

Which is the desired factorization

Final result :

(2x - 5) • (5x + 2)

A. 6/7

Step-by-step explanation:

you remove the a so that there are only 7 letters left. if you count everything except the k and a there are 6 letters