Book
Maths Puzzle
Algebra
Find all rational roots of:
4x^3-7x^2-21x-18=0
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Book Other Question
in which method we solve=
4x square-31x+21=0 ?
plz answer soon
Ann's age is seven-tenths of bill's age. In 4 years Ann's age will be eight- elevenths of Bill's age. How old is Bill now?