Factor this expression x^2+9x+20. show your work

You must remember that a polynomial is written like so...

ax^2 + bx + c

In this case...

a = 1

b = 9

c = 20

To factor you must find two numbers who both add up to b (9) AND multiply to c (20)

5 + 4 = 9

5 * 4 = 20

so...

(x + 5)(x + 4)

Hope this helped!

~Just a girl in love with Shawn Mendes

For this case we must factor the following expression:

To do this, we must find two numbers that, when multiplied, result in 20 and when added together, result is obtained 9. These numbers are 5 and 4.

So we have to express the expression as:

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls

answer: 8d

step-by-step explanation:

45+5= 50+5=55+5=60