Question

find sum of toots of the quadratic polynomial 3x^2+5x-9=0

Answer 1

Solution:

Given Equation,

→ 3x² + 5x - 9 = 0

Comparing with ax² + bx + c = 0, we get,

→ a = 3,

→ b = 5 and,

→ c = -9

We know that, in a quadratic equation,

→ Sum of roots = -b/a

Therefore,

→ Sum of roots = -(5)/3

→ Sum of roots = -5/3

Answer:

• The sum of roots of the given quadratic equation is -5/3

Know More:

• Quadratic equation: An equation with highest power of variable is 2, having at most two solutions/zeros.
• Standard Form: ax² + bx + c = 0
• Discriminant: D = b² - 4ac.
• If D > 0, roots are real and distinct.
• If D < 0, no roots exists.
• If D = 0, roots are real and equal.

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Answer 2

Answer:

-129

Step-by-step explanation:

3*3=9

9+5=14

14*(-9)= -129