This is a fraction btw. I need help.

(y^4)^5
= (must simplify also)
(y^7)^6

1 / y^22

Step-by-step explanation:

We multiply bracket powers and add powers if no brackets when multiplying same numbers on same line (denominator with denominator and numerator with numerator, we could cross multiply with (y^7)^6 / (y^7)^6 but workings below show when we simplify then subtract powers last step to reduce the fraction with no action of cross multiply.

(y^4 )^5 = y^20

(y^7)^6 = y^42

= y^20/ y^42

= 1 / y^22

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14

dhhghghghhrhbb it 5

d

step-by-step explanation: