Question

What is the value of the expression when a = 5 and b = 3? 4a ^ 2 - 5b^2
A. 55

B.
74

C.
81

D.
145

Answer 1

@Black_ninja123

Answer 2

A- you just plug in the numbers for a and b

Answer 3

what is 4*5^2

Answer 4

100

Answer 5

Correct
what is 5*3^2

Answer 6

45 I'm pretty sure

Answer 7

Now add both numbers

Answer 8

145 yes?

Answer 9

Yes

Answer 10

Thanks I passed.

Answer 11

but youre not adding the equation says your subtrating

Answer 12

It's fine that was the last one

Answer 13

It wasn't going to affect anything really just some homework

Answer 14

Oh subtract 100- 45

Answer 15

ok thanks

Answer 16

Double check your other problems to see if you used the right sign

Answer 17

It was an online test I passed by only missing one and no re trys But as long as I passed it's fine

Answer 18

Ok which one did you miss?

Answer 19

The last one subtraction it was nothing that would affect my grade or the test.

Answer 20

1 missed out of 20

Answer 21

Ok

Answer 22

I gtg cya