Question

What adds to make 28 and multiples to make 147

Answer 1

Below we illustrate and prove that 7 and 21 multiply to 147 and add up to 28:

7×21=147

7+21=28

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x2+28x+147=0

If so,the solution to factor the quadratic equation above is:

(x + 7) (x + 21)

To summarize,since 7 and 21 multiply to 147 and add up 28,you know that the following is true:

x2 + 28x + 147=(x+7) (x+21)

#BrainlyEveryDay

Answer 2

1 x 147 = 147
3 x 49 = 147
7 x 21 = 147
21 x 7 = 147
49 x 3 = 147
147 x 1 = 147

-1 + 29 = 28
-2 + 30 = 28
-3 + 31 = 28
1.25 + 26.75 = 28
2.50 + 25.5 = 28
3.75 + 24.25 = 28
1 + 27 = 28
2 + 26 = 28
3 + 25 = 28
12 + 16 = 28
13 + 15 = 28
14 + 14 = 28