Question

Find the sum and product of the roots of the quadratic equation 8x2 + 10x – 3 = 0.

Answer 1

x=-3/2 and x=1/4 are the zeroes.

Step-by-step explanation:

8x²+10x-3

8x²-2x+12x-3=0

2x(4x-1)+3(4x-1)=0

(2x+3)(4x-1)=0

x=-3/2 and x=1/4

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Answer 2

Step-by-step explanation:

In the quadratic equation ax

2

+bx+c=0,

sum of roots=−

a

b

So, in the equation 8x

2

−zx+18=0,

sum of roots=−

8

−z

∴10=

8

z

∴z=80