Question

пожалуйста помогите мне

Answer 1

$\frac{58 ^{2}+ 116^{2} - 29^{2}- 87^{2} }{ 43^{2}-2*43*14+ 14^{2} } = \frac{( 58^{2}+ 116^{2})-( 29^{2} + 87^{2} ) }{(43-14) ^{2} } = \frac{[ 58^{2}+(58*2) ^{2}]-[ 29^{2}+(29*2) ^{2}] }{ 29^{2} }=$$= \frac{ 58^{2}(1+4)- 29^{2}(1+4) }{ 29^{2} }= \frac{5* 29^{2}*(4-1) }{ 29^{2} }=5*3=15$