drewpineda17oz5ki4
drewpineda17oz5ki4 drewpineda17oz5ki4
  • 03-12-2018
  • Mathematics
contestada

Find the missing factor 5a^2+4a-9=(5a+9)( )

Respuesta :

ikarus ikarus
  • 11-12-2018

Answer:

5a^2 + 4a - 9 = (5a + 9)(a - 1)

Step-by-step explanation:

The given expression is 5a^2 + 4a - 9

The leading coefficient is 5 and last term is -9

Multiply them, we get -45

Now find the factors of -45 such that when you add the factors we have to get 4.

9*-5 = -45

9 + (-5)= 4

The right factors are 9 and -5.

5a^2 + 4a - 9 = 5a^2 + 9a - 5a - 9

= 5a^2 - 5a + 9a - 9

= 5a(a -1)+9(a-1)

= (5a +9)(a-1)

The missing factor is (a -1)

Thank you.



Answer Link

Otras preguntas

please help.........​
Which element of Old English is still in use in many words today? From which alphabet did the Anglo-Saxons borrow most of their letters?
Determine which of the following Equations illustrates the Commutative Property of Multiplication.
All of these things increase your self-confidence. What is the verb in this sentence? a. All b. things c. increase d. your
Write a function g whose graph represents a horizontal stretch by a factor of 4 of the graph of f(x)=|x+3|. g(x)=
sự can thiệp của chính phủ trong nền kinh tế có cần thiết hay không
b. Choose the correct answer below. O A. In a designed experiment, researchers simply observe characteristics and take measurements, as in a sample survey OB. I
how can we redevelop asia​
write any six measures to avoid cyber crime​
Jessica cox fly a plane reflection?