Answer:
(2a-1)^2
Step-by-step explanation:
Rewrite 4a^2 as (2a)^2
.
(2a)^2−4a+1
Rewrite 1
as 12
.
(2a)^2−4a+1^2
Check the middle term by multiplying 2ab
and compare this result with the middle term in the original expression.
2ab=2⋅(2a)⋅−1
Simplify.
2ab=−4a
Factor using the perfect square trinomial rule a^2−2ab+b^2=(a−b)^2
, where a=2a and b=−1
.
(2a−1)2
please brainly
Answer:
30 crayons
Step-by-step explanation:
Let x be the number of crayons he started with
gave out 14 crayons
x-14
Got 12 back
x-14+12
Gave out 11 after lunch
x-14+12 -11
This equals 17
x-14+12 -11 =17
Combine like terms
x-13 = 17
Add 13 to each side
x -13+13 =17+13
x = 30
Answer:
Graph A
Step-by-step explanation:
I already did this
There are 3 adult leaders since 18-3 = 15 then 15/5= 3