Answer:
B
Step-by-step explanation:
4(-5y) + 2y = 180
-20y + 2y = 180
-18y = 180
y = -10
x = 50
Answer:
............
Step-by-step explanation:
..
.
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Answer:
3
Step-by-step explanation:
Answer: (2x+5)(2x−5)
Step-by-step explanation:For me, what i like to do is to try divide the problem into two parts. For example in this problem, you would divide the 4x^2 into two 4x(since 4x+4x = 4x^2). Then 25 can be divide into into 5s (5x5=25). SInce you know that its a negative 25, you know that it has to be a negative on one of the sides. So the answer in factor form is (2x+5)(2x−5)
