Question

the sum of the root of the equation 2x²-7x+8=0​

Answer 1

Step-by-step explanation:

Factoring  2x2+7x-8 

The first term is,  2x2  its coefficient is  2 .

The middle term is,  +7x  its coefficient is  7 .

The last term, "the constant", is  -8 

Step-1 : Multiply the coefficient of the first term by the constant   2 • -8 = -16 

Step-2 : Find two factors of  -16  whose sum equals the coefficient of the middle term, which is   7 .

     -16   +   1   =   -15     -8   +   2   =   -6     -4   +   4   =   0     -2   +   8   =   6     -1   +   16   =   15

Observation : No two such factors can be found !!

Answer 2

Answer:

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Here's your answer...

Step-by-step explanation:

Sum of roots

alpha +beta = -b/a

= -(-7)/2

= 7/2

Hope it helps you.....