1.
I 180 = 2^x×3^2×5 then the value of x is
a)1
b)2
c)3
d)4

b) 2

Step-by-step explanation:

180=2^x times 3^2 times 5

180=2^x times 9 times 5

180=2^x times 45 (divide both sides by 45 next)

4=2^x

x=2

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

answer4 to the second power is 16

and 4 to the third power is 64,