Tyjanae Tyjanae

23-07-2015
Mathematics

contestada

Find the product mentally.

(2j + 7)(2j - 7)

A: 4j2 + 49
B: 4j2 - 49
C: 2j2 - 28j - 49

Respuesta :

Аноним Аноним

23-07-2015

(2j+7)(2j−7)

=(2j+7)(2j+−7)

=(2j)(2j)+(2j)(−7)+(7)(2j)+(7)(−7)

=4j2−14j+14j−49

=4j2−49

Answer Link

averyverydumbguy averyverydumbguy

10-07-2019

Answer:

B

Step-by-step explanation:

2j*2j=4j^2

7*-7=-49

Answer Link

Otras preguntas

I think the you have to do the sin rule but I’m not sure

please answer 1, 2, and 3, i will mark brainliest!!!!

at a summer camp 23 of the boys and 17 of the girls can swim there nine boys 11 girls at the camp who cannot swim. what is the ratio or the number of children w

what is the scariest thing to ever happen to you?

Find the total cost. $20 meal; 9% sales tax; 20% gratuity after the sales tax has been added Group of answer choices

Select the matrix that is the inverse of: [-2 1 1 1 1 3 -2 3 -1]

please help!!!!!! I will mark brainlist

I need help with this asap, will give 20pts to the right answer

Can someone please answer this??

When monochromatic light passes through the interface between two unknown materials at an angle θ where 0∘<θ<90∘, no changes in the direction of propagati