упростить выражение 1)√25а+√16а-√64 , 2)3√3b+√12b-√75b, 3) 2√7x+ √28x - 3√700x, 4)0,5√200y- 0,2√162y-√242y

1) =5√a +4√a -8 =9√a -82) =3√3b +2√3b -5√3b =03) =2√7x +2√7x -3√(7*100x) =4√7x -3*10√7x == -26√7x4) 0.5*10√2y -0.2*9√2y -11√2y ==5√2y -1.8√2y -11√2y = -7.8√2y