Factor 25 out of 25a^2−100.
Factor 25 out of 25a^2.
25(a^2)−100
Factor 25 out of −100.
25a^2+25⋅−4
Factor 25 out of 25a^2+25⋅−4.
25(a^2−4)
Rewrite 4 as 2^2.
25(a^2−2^2)
Factor.
Since both terms are perfect squares, factor using the difference of squares formula, a^2−b^2=(a+b)(a−b) where a=a and b=2.
25((a+2)(a−2))
Remove unnecessary parentheses.
25(a+2)(a−2)
I believe this is correct.
Answer:
b i think
Step-by-step explanation:
Red ! Add the corresponding x coordinates and then divide by 2. Repeat for the y values
Answer:
Solution for 2x-10=16 equation:
2x - 10 = 16
2x = 16 + 10
2x = 26 (divide both sides by 2 to get x)
2x/2 = 26/2
x = 13
Step-by-step explanation:
X + y = 4
x - y = -6
--------------add
2x = -2
x = -2/2
x = -1
x + y = 4
-1 + y = 4
y = 4 + 1
y = 5
solution is : (-1,5)