03-06-2020
Mathematics

contestada

Evaluate the expression 7a² - 3b³ when a) a= 4, b= -2 b) a= -8, b=5
You will end up with 2 answers here, substitute and solve.

Respuesta :

adekunle76 adekunle76

03-06-2020

Answer

Step-by-step explanation:

7a²-3b²

Replace a=4, b=2

7*4²-3*2²

= 112-12

= 100 first answer

7a²-3b²

Replace a=8, b=5

7*8²-3*5²

448-75

= 373 second answer

Answer Link

Otras preguntas

Traveling at 65 miles per hour, approximately how long will it take for Marcus to drive 310 miles

Sugar that occurs in DNA but not in RNA (A) Deoxyribose (B) Ribose (C) Uracil (D) Cytosine (E) Thymine

Traveling at 65 miles per hour, approximately how long will it take for Marcus to drive 310 miles

Please help me on these questions, Thanks 29. Express six and three-fifths as an improper fraction. 30. Find the improper fraction that is equivalent to eight

What is the rising action for boar out there

What is the value of 15/124×230/30÷230/124

why does a bicycle fitted with solid tyres give a bumper ride than on which has air fitted tyres

How can you find the quotient of 95540 / 562?

After mrs.fisher lost 17% of her invetment, she had $10375 How much did she had initially?

20/8 as a mixed number the simplest form