Question

Answer A B C :) struggling a bit

Answer 1

a) 7ab

b) y^3

c) e/f

Explanation:

a) when multiplying two variables, u can just put them right next to each other, e.g. b x c = bc

when numbers are added, same goes, they just go before the variable, hence the 7ab. If u had something like 7ab x 8 then you'd just multiply the 8 with the 7 and get 56ab

b) imagine y= 2. if u had 2 x 2 x 2, that would be 8 which is also 2^3. When any number is multiplied by itself n times, it's raised to that power. which is why y x y x y = y^3. y is being multiplied by itself 3 times.

c) If u had
`(4*2)/(2)`, that would = 8/2 = 4 because it would simplify. in the fraction, you could also reduce the 2 since it appears in both the numerator and denominator.

same thing here: both the numerator and denominator have 2 e and 1 f so they get crossed out, leaving e/f

hope this helps!

Answer 2

7ab

y³

e/f

Explanation:

a*b*7= 7ab

y*y*y= y³

`(x^n)/(x^y)=x^(n-y)\\\\(e^3*f)/(e^2*f^2)=(e)/(f)\\`