Question

X²-4
by
Xsquare-2x-15 equal to 0​

Answer 1

Answer:

Algebra

questions ___ x^2-2x-15=0

ans.....

Solve by Factoring x^2-2x-15=0

x2−2x−15=0x2-2x-15=0

Factor x2−2x−15x2-2x-15 using the AC method.

(x−5)(x+3)=0(x-5)(x+3)=0

If any individual factor on the left side of the equation is equal to 00, the entire expression will be equal to 00.

x−5=0x-5=0

x+3=0x+3=0

Set the first factor equal to 0 and solve.

x=5x=5

Set the next factor equal to 0 and solve.

x=−3x=-3

The final solution is all the values that make (x−5)(x+3)=0(x-5)(x+3)=0 true.

x=5,−3x=5,-3

x2−2x−15=0x2-2x-15=0