Question

NEEDED ASAP !! For each pair of expressions, identify whether the expressions are equivalent. Write

YES or NO, and justify your answer with math or words.
a)
and
1 1
+
y
x+y
b) x² + x
and
x3
c) 3x – 12
and
x - 4
d) -2(x - 3)
and
- 2x - 3
e) 5x2
and
x² + 4x²
f) x(y+z)
and
xy + 2x

Answer 1

Explanation:

a) No

because

1/x + 1/y

= y + x/xy

b) No

because

x³ = x × x × x

c) Yes

because

3x - 12 = 0

3(x - 4) = 0

x - 4 = 0

d) No

because

-2(x - 3)

= -2x + 6

e) Yes

because

x² + 4x² = 5x²

f) Yes

because

x(y + z)

= xy + zx