The number of students of 7 more than 5 times the number of teacher. there are 12 theacher. how many students are there?
1 answer:
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Answer:
Step-by-step explanation:
Move all terms to one side
4x^2 + 4x + 5 = 0
Plug into quadratic formula
x = (-4 <u>+</u> ) / 2(4)
= (-4 <u>+</u> )/8
At this point, there are no real answers. The roots to this equation are complex.
x = (-4 <u>+</u> 8i)/8
= (-1 <u>+</u> 2i)/2
Answer:
Step-by-step explanation:
Product of a number and its multiplicative inverse should be equal to 1.
So,