The wording is a bit iffy, but they actually meant that the solutions for that equation is x = 3 AND x = -4.
Hello everyone. This question is apparently unsolvable:
If or are the solutions of the equation , find the values of and .
The keyword in this irksome question would be the word 'or'. So it denotes that that this involves quadratic formulas.
Can anyone give me a clue so that I may make a breakthrough in understanding this problem? Thank you so much!
No this question IS solvable. And quite easily I might add.
We know the quadratic formula as having a which yields 2 answers.
Substituting in values from into the quadratic formula we get:
and
We know that the minus squareroot usually gives us the smaller answer of x. So then we just substitute in our x answers to get:
and
Now solve for a and b using simultaneous equation.