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

A spherical balloon is inflated with gas at the rate of 600 cubic centimeters per minute. How fast is the radius of the balloon increasing at the instant the ra

Who has the ultimate authority to decide whether or not a federal law or action is constitutional? Senators Congress Supreme Court President

A circle centered at the origin has a radius of 10 units. The terminal side of an angle, Theta, intercepts the circle in Quadrant I I at point C. The y-coordina

The area of a rectangle city park is 25/54 square miles. The length of the park is 5/9. What is the width ,in miles, of the park?

You start a lawn care company with four friends. You agree to split the profits equally. The tools you need to buy cost $525. How much income will you have to e

Fossil fuels are the only cause of global warming

The sum of the interior angles of an n-gon is _____(n - 2). 360° 180° 270° 540°

Pembroke native flower seeds has a unique ________ or ways of doing things that evolve through shared values and beliefs

According to brazilian theatre director augusto boal, what was the first human invention?

plot points at (0,0) and (3,4). What is the slope of your line?