Answer:
Explanation:
Identify the coefficients of the x terms. They are a = -5, b = 7 and c = 3.
The discriminant (the part of the quadratic formula that's under the square root operator) is then b^2 - 4ac, or 7^2 - 4(-5)(3), or 49 + 60, or 109. Because this is positive, we know that 2) y=-5x^2+7x+3 has two real, unequal solutions.
By the quadratic formula, we have:
-7 ± √discriminant
x = ------------------------------ or:
2(-5)
-7 ± √109
x = -------------------
-10