Answered

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What are the roots for the trinomial below? *x2 – 2x – 15O x=-5,x=-3Ox=5,x=-3Ox=3,x=5O x=-5,x=3

What Are The Roots For The Trinomial Below X2 2x 15O X5x3Ox5x3Ox3x5O X5x3 class=

Sagot :

ANSWER:

[tex]x=5,=-3[/tex]

STEP-BY-STEP EXPLANATION:

We have the following equation:

[tex]x^2-2x-15[/tex]

We solve by factoring. We look for two numbers that product -15 and the sum is equal to -2:

[tex]\begin{gathered} 3\cdot-5=-15 \\ 3+(-5)=-2 \\ \text{Therefore:} \\ (x+3)\cdot(x-5)=0 \\ x+3=0\rightarrow x=-3 \\ x-5=0\rightarrow x=5 \end{gathered}[/tex]

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