Question

@JoannaBlackwelder
Given the following perfect square trinomial, fill in the missing term. (Do not type the variable in the blank.)

4x^2 + ___x + 49

Numerical Answers Expected!

Answer 1

dont give me the answer only need an explanatipon of how to do it

Answer 2

Here is the formula:
(a + b)^2 = a^2 + 2ab + b^2

Answer 3

Can you find a and b?

Answer 4

but whats a

Answer 5

You are looking for a single term that is squared.

Answer 6

what squared is 4x^2

Answer 7

(4x+b)^2=4x^2+2(4x^2)b+b^2

Answer 8

is it like this

Answer 9

Not quite.

Answer 10

(2x)^2 is 4x^2

Answer 11

So 2x is a.

Answer 12

Does that make sense?

Answer 13

nope:c

Answer 14

We are using the a^2 + 2ab + b^2 part. Ignore the factored part for now.

Answer 15

what factor part;c

Answer 16

So, the first term (4x^2) is the a^2 term.

Answer 17

(a + b)^2 This part.

Answer 18

Sorry, I meant the factored part of the formula.

Answer 19

oooh ok i get thanks man

Answer 20

No worries :) What did you get for the blank?

Answer 21

14

Answer 22

Sweet! Good job!