Question

4*a( во второй степени)-1 : 2a +1 при a=1/2

Answer 1

4*a^2-1:2a+1

при а=1/2

4*(1/2)^2-1:2*1/2+1=4*1/4-1:1+1=1-1+1=1

Answer 2

4а²-1:2а+1=4а²:2а=2а

2×½=2/2=1