Which of the expressions have a value of 2?
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The answers are B and E

Step-by-step explanation:

The square root of 4 is 2.

The cube root of 8 is 2.

A is wrong because its value is 4.

C is wrong because its value is 4.

D is wrong because the square root of 8 isn't whole.

E. √4

B. ³√8

Step-by-step explanation:

You can find this simply by putting it into a calculator if you have access to one. Just type √ and 4. If you don't have a calculator, you can just use the knowledge that 2 × 2 = 4, hence why it's the square root of 4 :)

You can also determine that B is correct by doing 2 to the power of 3.

2³ = 8, so you know that B is correct too.

on friday there were 15 birds

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct