3 years ago

What two numbers multiply to -105 and add to 8

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

5 0

A b=-105
a+b=8
x²+8x-105=0

x²+-7x+15x-105=0
x(x-7)+15(x-7)=0
(x-7)(x+15)=0
a=-7
b=15

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