john smith has $9000 to invest in three types of stock: low risk, medium- risk, and high-risk. he invests according to three principles. the amount invested in low-risk stocks will be at most $1000 more than the amount invested in medium-risk stocks.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

da freeck kinda math is this just drop out

step-by-step explanation:

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8