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

sue stacked one box onto another. the bottom had the height of 2 1/3 feet and the top box had the height of 3 2/3 feet. how tall were the stacked boxes?

Which Kelvin temperature is equal to 200.°C?

what event triggered world war i ?

What expression represents the number of squares in terms of the figure number?

The name of each contestant is written on a separate card, the cards are placed in a bag, and three names are picked from the bag. Identify which type of sampli

Find the domain of each rational expression. f(x)=5x-7/4

What expression represents the number of squares in terms of the figure number?

what is the possessive case?

Our body needs iron. Certain foods are rich in iron and iron tablets are usually recommended by doctors. but neither the food nor tablets are hard like iron? Wh

Write the equation For a Line that intersects points(1,3) And (2,5) which one is a.y=x+2 B.y=2x+1. C.y=3x-3. D.Y=-x+3 For me is letter B.please help