Question 1161902
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{{{v(t)=61-0.61t^2}}}


{{{v(t)=-0.61t^2+61}}}


{{{v(t)=-0.61(t^2-100)}}} Divide both terms (-0.61t^2 and 61) by -0.61 to factor it out


Optionally you can use the difference of squares rule to go from {{{t^2-100}}} to {{{(t-10)(t+10)}}}. So {{{v(t)=-0.61(t^2-100)}}} is the same as {{{v(t)=-0.61(t-10)(t+10)}}}
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