7*(4а^5+2аb)= (5xy-3x^2)*x^2= 2a^7*(5a^3+0,4ab)= (-2/11)*(m-n+p)= (-4)*(8a^2-6a+12)= (1,4x^2-3,5y)*(-2/7x)=

7 (4а+2ab) = 28a+ 14ab = вынесем общий множитель (если нужно): = 14a(2a+b) (5xy-3x)*x= 5xy -3x=5хy- 3х= = x (5y-3x) 2a(5a+0.4ab) = 2*5a + 2*0.4a b= 10a +0.8ab= = 10a (a+0.08b) (-2/11)(m-n+р) = - 2/11 m +2/11 n - 2/11 р -4 (8а-6а+12) = -32а +24а - 48 = =- 8(4а +3а -6) (1/4 х -3,5у)(-2/7 х) = -(1/4* 2/7) х + (3,5 *2/7 ) х=-1/14 х + х= = х ( -1/14 x +1)