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this is not difficult ..

observe that the roots of the equtation

r⁴-wr³-zr²-yr-x=0 are 1,2,3 and 4..

so we get product of roots =x=24 and similarly the others

this is not an equation...how and from where did u get r????[2]

Put r=1,2,3,4 you will get the four equations you have given ..

hmm rohan and satan same persons [4]

but how did u get r???

hey r is a variable when replaced by 1,2,3,4 gives four equalities which you have shown