Question

The sum of zeroes of polynomial 2x^2-7x-9 will be

Answer 1

Answer:

2x^2-7x-9=0

=2(-1)^2-7(-1)-9

=2+7-9

=9-9

=0

Answer 2

Answer:

• $2x^{2} - 7x - 9 = 0$
• $2x {}^{2} - 2x - 9x - 9 = 0$
• $2x | x - 1| - 9 |x - 1| = 0$
• so then sum of zeroes are,
• $\alpha + \beta = \frac{ - b}{a}$
• $1 + \frac{9}{2} = \frac{ - 7}{2}$
• so zeroes are
• $\frac{11}{2} this \: is \: answer$
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