Question

Вычислите : 6,4/4^2-0,8^2; 0,3^2/0,4^2-0,2^2

Answer 1

1) 6.4 /(4 -0.8)(4 +0.8) =6.4 /3.2*4.8 =2/4.8 =1/2.4 =1 :24/10 =1 :12/5 =1 *5/12 =5/12

2) 0.3² /(0.4 -0.2)(0.4 +0.2) =0.3*0.3 /0.2*0.6 =0.3 /0.2*2 =0.3/0.4 =0.75

Answer 2

Спасибо )

Answer 3

пожалуйста