Question 188317
{{{ x^2-4x+4(x^2+2x-5) }}} Start with the given expression.



{{{ x^2-4x+4(x^2)+4(2x)+4(-5) }}} Distribute



{{{ x^2-4x+4x^2+8x-20 }}} Multiply



{{{ 5x^2+4x-20 }}} Combine like terms.



So {{{ x^2-4x+4(x^2+2x-5) = 5x^2+4x-20}}}