Answer:
1.311 2.522 3.603
Step-by-step explanation:
Answer:
-2x-2y
Step-by-step explanation:
(-5x+4y) - (-3x+6y)
Remove unnecessary parentheses
-5x+4y - (-3x+6y)
When there is a - infront of an expression in parentheses change the sign of each term in the expression
-5x+4y+3x-6y
Colllect all like terms
-2x+4y-6y
-2x-2y
Step-by-step explanation:
your going to distribute the 2 to the x and the four your equation will then become (2x-8)=-5 you would then do the opposite of subtraction which is add so add +8 to the -8 and that cancels it out then you would +8 to the -5 and get 2x=3 then I'm confused from there hope that helps kinda
Answer:
3^1
Step-by-step explanation:
3^-5 * 3^6
When multiplying exponents with the same base, we can add the exponents
3^ ( -5+6)
3^1
Answer: a=5+√5
b=5-√5
Step-by-step explanation:
a=?
b=?
P=20
A=20
P=a*b=20
A=a+b=20
------------------
ab=20
a+b=10
--------
a=10-b
(10-b)b=20
-b²+10b-20=0
b=-10±√100-80/-2
b=-10±√20/-2
b=-10±2√5/-2
b=-10-2√5/-2=5+√55
b=5-√5
a+b=10
a+5-√5=10
a=5+√5
a+5+√5=10
a=5-√5
