Answer:
a)x²y²+2xy²z+y²z²-2x²y²z²
b) -8
Step-by-step explanation:
foil the squared to get:x²y²+2xy²z+y²z²
and then plug in the numbers and chug along
hope this helps
Answer:
Kamira has 9 apples and John has 14 apples
Step-by-step explanation:
first you add 6+4 to get 10
then add 4+10 to get 14
Answer:6 ÷ 4x = 15
Step-by-step explanation:
six is less than the quotient and quotient mean division, replace a number with a variable and put it with four and the you would put equal 15
Answer:
see explanation
Step-by-step explanation:
The area (A) of a square is calculated as
A = s² ( s is the measure of a side of the square )
Here s = x + 2 and A = 7, thus
(x + 2)² = 7 ← expand left side using FOIL
x² + 4x + 4 = 7 ( subtract 4 from both sides )
x² + 4x = 3 ← as required