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

Aparty rental company has chairs and tables for rent. The total cost to rent 5 chairs and 6 tables is $65. The total cost to rent 3 chairs and 2 tables is $25.

helpppppppppppppppppppppp

Some constitutional rights applicable in criminal cases are offense specific (i.e., when invoked, they apply only to the specific charge for which they were inv

A molecule has 2 double bonds on the central atom and no lone pairs. Predict the molecule geometry. What do you think the bond angles would be?

Cloning is the creation of an organism that is an exact genetic copy of another. There are a couple of ways to make an exact genetic copy of an organism: artifi

11) A 0.2 kg apple on an apple tree has a potential energy of 10 J. It falls to the ground, converting all of its PE to kinetic energy. What is the velocity of

How do you balance a chemical reaction?

Camille shaded 18/30 of a model. Write the decimal that represents the unshaded portion of the model

Paisley was organizing her shoe collection. She counted 24 pairs of sandals. This represents 32% of the total number of shoes she owns. How many shoes does Pais

A 42.0g sample of compound containing only C and H was analyzed. The results showed that the sample contained 36.0g of C and 6.0g of H. Which of the following q