U=2x+3, x=u/2-3/2
u^2+8u+11=0
u1=(-8+sqrt(64-44))/2=-4+sqrt(5)
u2=-4-sqrt(5)
x1=u1/2-3/2=-7/2+sqrt(5)/2
x2=u2-3/2=-7/2-sqrt(5)/2
Answer:
Hello I believe the answer is 6.96 But I dont know for sure so answer that at your OWN risk.
Answer:
-16
Step-by-step explanation:
Let's call the number x. Double the sum of x and seven is 2(x + 7) and two less than x is x - 2. Since these are equal we can write:
2(x + 7) = x - 2
2x + 14 = x - 2
x = -16