Question

Cho a÷k=x÷a;b÷k=y÷b, chứng minh a^2÷b^2=x÷y

Answer 1

a/k=x/a=aa/ka=xk/ka=aa=xk

b/k=y/b=bb/kb=yk/kb=bb=yk

Vì aa/bb=xk/yk

Suy ra aa/bb=x/y

Answer 2

a/k=x/a=aa/ka=xk/ka=aa=xk

b/k=y/b=bb/kb=yk/kb=bb=yk

Vì aa/bb=xk/yk

Suy ra aa/bb=x/y

 

Answer 3

a/k=x/a=aa/ka=xk/ka=aa=xk

b/k=y/b=bb/kb=yk/kb=bb=yk

Vì aa/bb=xk/yk

Suy ra aa/bb=x/y

a/k=x/a=aa/ka=xk/ka=aa=xk

b/k=y/b=bb/kb=yk/kb=bb=yk

Vì aa/bb=xk/yk

Suy ra aa/bb=x/y

a/k=x/a=aa/ka=xk/ka=aa=xk

b/k=y/b=bb/kb=yk/kb=bb=yk

Vì aa/bb=xk/yk

Suy ra aa/bb=x/y

a/k=x/a=aa/ka=xk/ka=aa=xk

b/k=y/b=bb/kb=yk/kb=bb=yk

Vì aa/bb=xk/yk

Suy ra aa/bb=x/y

a/k=x/a=aa/ka=xk/ka=aa=xk

b/k=y/b=bb/kb=yk/kb=bb=yk

Vì aa/bb=xk/yk

Suy ra aa/bb=x/y

vv

Answer 4

a/k=x/a=aa/ka=xk/ka=aa=xk

b/k=y/b=bb/kb=yk/kb=bb=yk

Vì aa/bb=xk/yk

Suy ra aa/bb=x/y