Kevin C. answered 03/24/21
Highly Educated High School Math Teacher with Experience in STEM
Solved using Factoring
16x2 + 10x - 27 = -6x + 5 (Set your quadratic equation equal to zero in order to factor)
16x2 + 10x - 32 = -6x (subtract 5 on both sides)
16x2 + 16x - 32 = 0 (add 6x to both sides)
16x2 + 16x - 32 = 0
16 (x2 + 1x - 2) = 0 (Remove a GCF of 16)
Find 2 integers that multiply to c (which is -2) and add to b (which is 1).
2 * -1 = -2 and 2 + -1 = 1
So,
16 (x + 2)(x - 1) = 0 (Factored form)
Apply the zero product property,
x + 2 = 0 and x - 1 = 0
Therefore,
x = -2 and x = 1
Solution: It is not one of Ms. Jackson's solutions because neither solution is equal to 3. The correct solutions are -2 and 1.