valerieanguiano41 valerieanguiano41

03-04-2020
Mathematics

contestada

Find the value of c that will make 9x2 + 30x + ca perfect square trinomial.

Respuesta :

surjithayer10 surjithayer10

03-04-2020

Answer:

Step-by-step explanation:

(a+b)²=a²+2ab+b²

9x²+30x+ca

=(3x)²+2×3x×5+c

=(3x)²+2×3x×5+5²-5²+c

=(3x+5)²-25+c

it is a perfect square if -25+c=0

or c=25

Answer Link

Otras preguntas

solve the system of equations below y=3/2x-2 and 2x+y=-4

"I have a dream that one day on the red hills of Georgia the sons of former slaves and the sons of former slave owners will be able to sit down together at the

Is 5.875 bigger than 5.8

Define food and drinks for the burial saramony for a pharaoh

What is the purpose of a voltage source? A. It removes insulators in a circuit so electrical charges flow freely. B. It increases the potential energy of electr

What is the sum of 6 pints and 4 cups?

What is the difference between alternating current and direct current? A. Alternating current regularly reverses direction. Direct current flows in only one dir

You hit a golf ball 90 yards. it travels three-fourths of the distance to the hole. write an equation you can use to find the distance d from the tee to the hol

What is the definition of Constantine?

What is the title of this cartoon?