factirize ( x2 - 4x - 21)
Answers
Answered by
1
Answer:
Quadratic equations whose roots are integers can be solved by factoring. To factor, find two numbers whose sum is 4 (the coefficient of the middle term) and whose product is -21 (the constant term).
...
Solving a Quadratic Equation By Factoring.
x2 + 4x - 21 = 0 x2 + 4x - 21 = 0
0 = 0 0 = 0
So, the roots are 3 and -7
Similar questions