Answer:
Step-by-step explanation:
To the evaluate -5.3+7.9
We get
2.6
Therefore the error
=2.6-2.4
=0.2
Answer:9a^2+18a-72
Step-by-step explanation:
9(a+1)^2-81
9(a+1)(a+1)-81
Open brackets
9(a^2+a+a+1)-81
9(a^2+2a+1)-81
9a^2+18a+9-81
9a^2+18a-72
Answer:
= -x^2 +x
Step-by-step explanation:
(x) = 1 - x^2
g(x) = 1-x,
(f-g)(x) = 1-x^2 - ( 1-x)
Distribute the minus sign
= 1-x^2 -1 +x
Combine like terms
= -x^2 +x
Answer:
1, 4, 9, 16, 25, etc
Step-by-step explanation:
a perfect square is a whole number multiplied by itself. it can be written with the notation ^2
to find a perfect square, simply square or bring to the 2nd power, any whole number
for example 9^2
this means that 9 is multiplied by ITSELF 2 times, it is NOT 9*2
it can also be written as 9*9=81
hope this helps, if anything confuses you feel free to ask ♡
Step-by-step explanation:
Cross Multiplying
Therefore
Hope it will help you.
