Explain the Error Marco wrote the expression
(2x - 7y) ^{2} = 4x^{2} - 49y^{2}(2x−7y)2=4x2−49y2
Explain
and correct his error. all help is appreciated :)

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

How is working backward similar to solving an equation?

For [tex]f(x) = 4x + 1[/tex] and (x) = [tex]g(x)= x^{2} -5,[/tex] find [tex](\frac{g}{f}) (x)[/tex]a. [tex]\frac{x^{2} - 5 }{4x +1 },x[/tex] ≠ [tex]-\frac{1}{4}[/tex]b. x[tex]\frac{4 x +1 }{x^{2} - 5}, x[/tex] ≠ ± [tex]\sqrt[]{5}[/tex]c. [tex]\frac{4x +1}{x^{2} -5}[/tex]d.[tex]\frac{x^{2} -5 }{4x + 1}[/tex]