What is x^2-4x+4+(7x-y)^2 ?

The solution to x^2-4x+4+(7x-y)^2 is 50x^2-4x-14xy+y^2+4

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simplify x^2-4x+4+(7x-y)^2

simplify

x^{2} - 4 x + 4 + (7 x - y)^{2}

50 x^{2} - 4 x - 14 x y + y^{2} + 4

Solution steps

x^{2} - 4 x + 4 + (7 x - y)^{2}

Expand

(7 x - y)^{2} : 49 x^{2} - 14 x y + y^{2}

= x^{2} - 4 x + 4 + 49 x^{2} - 14 x y + y^{2}

Group like terms

= x^{2} + 49 x^{2} - 4 x - 14 x y + y^{2} + 4

Add similar elements:

x^{2} + 49 x^{2} = 50 x^{2}

= 50 x^{2} - 4 x - 14 x y + y^{2} + 4

\frac{20 x ^{6}}{14 x ^{2}}

\frac{5}{6} \div \frac{3}{2}

(5 z - 1) (8 z - 5)

72 - 62

\frac{2}{6} + \frac{4}{3}

What is x^2-4x+4+(7x-y)^2 ?
The solution to x^2-4x+4+(7x-y)^2 is 50x^2-4x-14xy+y^2+4