What is expand ((85+r)(95-r))/((10-2r)^2) ?

The solution to expand ((85+r)(95-r))/((10-2r)^2) is (8075+10r-r^2)/(100-40r+4r^2)

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expand ((85+r)(95-r))/((10-2r)^2)

expand

\frac{( 85 + r ) ( 95 - r )}{( 10 - 2 r ) ^{2}}

\frac{8075 + 10 r - r ^{2}}{100 - 40 r + 4 r ^{2}}

Solution steps

\frac{( 85 + r ) ( 95 - r )}{( 10 - 2 r ) ^{2}}

(10 - 2 r)^{2} = 100 - 40 r + 4 r^{2}

= \frac{( r + 85 ) ( - r + 95 )}{100 - 40 r + 4 r ^{2}}

Expand

(85 + r) (95 - r) : 8075 + 10 r - r^{2}

= \frac{8075 + 10 r - r ^{2}}{100 - 40 r + 4 r ^{2}}

\frac{0.00550368}{s ( s + 0.00406 )}

(3 - x) \cdot (3 + x)

10 (lo g_{10} (2) + 12)

(\frac{( x ^{3} )}{6} + \frac{1}{2 x}) (\frac{( x ^{2} )}{2} + \frac{1}{2 x ^{2}})

e^{x} (x^{2} - 2 x - 8)

What is expand ((85+r)(95-r))/((10-2r)^2) ?
The solution to expand ((85+r)(95-r))/((10-2r)^2) is (8075+10r-r^2)/(100-40r+4r^2)