(2√5+3√7)(2√5+3√7) = (2√5)(2√5) + (2√5)(3√7) + (3√7)(2√5) + (3√7)(3√7)
(2√5+3√7)(2√5+3√7) = 4(5) + 6√35 + 6√35 + 9(7)
(2√5+3√7)(2√5+3√7) = 20 + 12√35 +63
(2√5+3√7)(2√5+3√7) = 83 + 12√35
Answer: 83 + 12√35
Answer:
Step-by-step explanation:
we know that
The compound interest formula is equal to
where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest in decimal
t is Number of Time Periods
n is the number of times interest is compounded per year
in this problem we have
substitute in the formula above
Find the interest
9x would be you answer why because you'll divide 5 and 1 which is 5 then you'll add 5+4 which equals 9 and then just add the X at the end so your answer is 9X
A=xy+yz
A=y*(x+z)
y=A/(x+z)
2 ( which came from 2y ) divided by 6 is 3.