Answer:
1 False
b. 4.6 and -1.1
Explanation:
A negative answer for x is ok
A negative answer inside the square root is not ok. A negative answer inside the square root means the answer is not real. A negative answer just means that x is less than zero.
The quadratic formula is
-b ± sqrt(b^2 -4ac)
----------------------------
2a
2x^2 -10= 7x
Lets get the equation in proper form
2x^2 -7x-10 = 7-7x
2x^2 -7x-10 =0
a=2 b=-7 c=-10
7 ± sqrt((-7)^2 -4(2)(-10))
----------------------------
2(2)
7 ± sqrt((49 +80)
----------------------------
4
7 ± sqrt((129)
----------------------------
4
7 ±11.3579
----------------------------
4
7 +11.3579 7-11.3579
------------------ and -------------
4 4
4.589 and -1.089475
Rounding
4.6 and -1.1