What are the solutions of the equation x^2+ 9x+15=0?

x^2+9x+20.25=5.25

Step-by-step explanation:

a^2+ba+c; x^2+9x+15=0; x^2+9x+15-15=0-15; x^2+9x=-15; then you you take (1/2b)^2 and add it to both sides, 4.5^2=20.25; x^2+9x+20.25=-15+20.25; x^2+9x+20.25=5.25

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get

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