SOLUTION: a metalworker makes a box from a 15in by 20in piece of tin by cutting a square with side length x out of each corner and folding up the sides. wright and simplify an expression f
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Question 585212: a metalworker makes a box from a 15in by 20in piece of tin by cutting a square with side length x out of each corner and folding up the sides. wright and simplify an expression for the area for the base of the box.
(it's meaning a foil method equation as the expression.)
You can put this solution on YOUR website! a metalworker makes a box from a 15in by 20in piece of tin by cutting a square with side length x out of each corner and folding up the sides.
write and simplify an expression for the area for the base of the box.
:
With squares removed the dimensions of the box will be:
(15-2x) by (20-2x) by x
:
Area of the base
FOIL
(15-2x) * (20-2x) = 300 - 30x - 40x + 4x^2
:
Combine like terms to form a quadratic equation
f(x) = 4x^2 - 70x + 300. sq/in is the area of the base
