3 years ago

Factor this quadratic expression: a2 - 2a - 15

Mathematics

2 answers:

Mumz [18]3 years ago

8 0

A² - 2a - 15
= a² - 5a + 3a - 15
= a(a-5) + 3(a-5)
= (a-5)(a+3)

Sliva [168]3 years ago

7 0

A^2-2a-15

1. Ask: Which two numbers add up to -2 and multiply to -15?
-5 and 3

2. Rewrite the expression using the above
(a-5)(a+3)

Have a nice day :D

You might be interested in

(4, 1) and (6,7)what is the slope

mojhsa [17]

Answer:

Step-by-step explanation:

$m = \frac{y}{x} = \frac{7 - 1}{6 - 4} = \frac{6}{2} = 3$

6 0

3 years ago

Mr. Ketchum collets Pokémon cards. He purchases a rare charizard Pokémon card for $525. Research shows this card value will incr

e-lub [12.9K]

Answer:

18.37500

Step-by-step explanation:

Here You Go! Hope It Helps Bud

5 0

2 years ago

A triangular prism. The rectangular sides are 8 inches by 4 inches, 8 inches by 5 inches, and 8 inches by 3 inches. The triangul

Scrat [10]

Answer:

A of each triangular base = 6 in²

A of both bases = 12 in²

Lateral A = 96 in²

Surface area = 108 in²

Step-by-step explanation:

Area of each triangular base

1/2(3)(4) = 1/2(12) = 6

Area of both bases

6*2 = 12

Lateral Area

(8)(3) + (8)(4) + (8)(5)

24 + 32 + 40

Total Surface area

96 + 12 = 108 in²

5 0

4 years ago

Read 2 more answers

Please help!! Thank you so much

stiv31 [10]

Answer:

I think answer is

b. (2,1)

:-)

5 0

3 years ago

Show your solution follow the steps need an answer, please need an answer, please.

ratelena [41]

Answer:

Step-by-step explanation:

2÷6=3

hope it can help...

4 0

3 years ago