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What's the algebraic expression of "4 times a number cubed decreased by 7"?

Sagot :

Take the variable to be x

4x^3-7

Answer:

Statement:  "4 times a number cubed decreased by 7"

Let a number be  x is denoted as an arbitrary variable.

Now, cubed means raise x to the third power  i.e [tex]x^3[/tex]

then, 4 times a number cubed i.e [tex]4x^3[/tex]

Decreased by 7 means, subtract 7  

⇒[tex]4x^3-7[/tex]

Therefore, the algebraic expression for the given statement is, [tex]4x^3-7[/tex]