Question

If 3 and -6 are zeroes of ax²+bx-18 than a+b=​

Answer 1

Answer:

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Answer 2

Answer:

a+b=4

Explanation:

9a+3b=18-1

36a-6b=18-2

equate 1 and 2

9a+3b=36a-6b

solve and get b=3a

substitute in equation 1

9a+3(3a)=18

18a=18

a=1

and substitute a in equation 1

9(1)+3b=18

3b=9

b=3

a+b=1+3=4