Answer:
1.mountains plains rivers
2. A
3.C
4.B
Step-by-step explanation:
yes
Multiply what’s on the outside to the inside, the variable is always a lower case letter such as x,
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The quadratic formula is
.
From the problem, a is 1, b is -1, and c is 12. Plugging in these values gives:

Because there is a square root of a negative number, there is no solution.