1/4 of a number is 20. What is 5 times the number?

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Given that f(x ) = 4x^3 + 12, evaluate f ( −2) .


Solve algebraically: 6a + b = 16 5a - 2b = 19


Simplify: y+y-x×x


Show that (x+1)(x+2)(x+3) can be written in the form ax^3 +bx^2 + cx + d where a,b,c,d are positive integers.


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