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

find a solution of the linear inequality. y ≥ 4x – 5 a. (1, 1) b. (2, 1) c. (3, 4) d. (3, 0)

which form of carbon in the figure above is the hardest

On a new construction site an electrician can install a new light fixture in 20 minutes a project cost for 24 new fixtures to be installed on each of four floor

hi there can anyone help me out with this question please

Identify the simple predicate in the following sentence.my mother has been waiting all morning for the plumber to arrive.

If the length of the major axis of an ellipse is 28 units and the foci are located 3.5 units away from the center, what is the eccentricity of the ellipse?

Over time, the power of the presidency has expanded because

an electronics store makes a profit of $72 for every standard cd player sold and $90 for every portable cd player sold. the manager’s target is to make at least

Help me and I'll do the same

Identify the type of error in the sentence. If the sentence contains no error, select C. After school we planned to do homework and swimming. definition struc