3 years ago

Solve the equation for all values of x by completing the square. x2 + 8.0 + 15 = 0

Mathematics

1 answer:

Aleonysh [2.5K]3 years ago

6 0

Answer:

x= -3

x= -5

Step-by-step explanation:

x^2 + 8x + 15 = 0

find which 2 numbers when multiplied equal 15 and when added equal 8

they are 3 and 5

(x+3)(x+5)

x+3 =0

x+5=0

x= -3

x= -5

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