What is a quadratic (4th degree) polynomial function P(x) with rational coefficients so that p(x)=0 has roots 1, 3, and 1+2i Please provide work!

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

At oaknoll school, 90 out of 270 students on computers. what percent of students at oak knoll school do not own computers? round the nearest tenth of a percent.