Question

Solve 2x2 = -10x.

Answer 1

\[2x^2 = -10x\]?

Answer 2

x=-5

Answer 3

Think on a number you can plug into the x, and make an equality.

Answer 4

If you can't do it. The use a method of solution.

Answer 5

If you can't think of a number, you could brute-force your way through it:\[2x^2=-10x,\]\[2x^2+10x=0,\]\[x^2+5x=0,\]\[x(x+5)=0.\]Then you can clearly see that we have two solutions: 1. when \(x=0\) and 2. when \(x=-5\), as no-data stated above.