Answer:
x=2
Step-by-step explanation:
If 3x + y = 7, then y= 7 - 3x.
Substitute in x - 2y = 0
So:
x - 2(7-3x)=0
x-14+6x=0
7x=14
x=2
Answer:
Step-by-step explanation:
i think -4,-2
Step-by-step explanation:
step 1. (a + b)(a - b) = a^2 - ab + ab - b^2 = a^2 - b^2.
step 2. this is always a binomial and never a trinomial and hence never a perfect square trinomual.
step 3. answer: never.
Go on math papa 100r^(6)-90r^(3)+8
Answer:
0.042
Step-by-step explanation: