The answer is True
It takes a distance of 6 to get from -6 to 0, and it takes another distance of 1 to get from 0 to 1.
Altogether, the total distance from -6 to 1 is 7
She knits 18 squares on Monday.
Then she knits 7 more squares each day:
Tuesday: +7, Wednesday: +7, Thursday: +7 and Friday: +7
18 + 7 * 4 = 18 + 28 = 46
Answer: She has 46 squares on Friday.
It says look at the above problem.
It is impossible for me to know the answer unless I know the above problem.
Altho' I'm not using the fund. thm. of alg. specifically to determine the # of roots of 2x^2 + 4x + 7, polynomials of the nth degree all have n roots.
Completing the square: 2x^2 + 4x + 7
2(x^2 + 2x + 1 - 1) +7
2(x+1)^2 - 2 +7
2(x+1)^2 + 5
To solve for the roots, set the above = to 0 and solve for x:
2(x+1)^2 = -5 => (x+1)^2 = -5/2
x+1 = plus or minus sqrt (-5/2) => x+1 = plus or minus i*sqrt(5/2)
... and so on. As expected, this 2nd order poly has 2 roots. The roots in this case happen to be complex.