Общий множитель за скобками в каждом из выражений1) 2M-2N = 2(M-N2) 3A-6B = 3(A-2B3) 6x+10y = 2(3x+5y4) 3x+3y = 3(x+y5) -4m-4n = -4(m+n6) 2c+8d = 2(c+4d7) 5m-15m = -108) 15a-129) 20c-24d = 4(5c-6d)
Упрощение выражений1) 5-(a+3) = 5-a-3 = 2-2) 2+(-8+c) = 2-8+c = -6+3) 0.8-(m+3) = 0.8-m-3 = -2.2-8-(10+b) = -2-3+(-d-5) = 3-d-5 = -2-1.4+(n-2) = 1.4+n-2 = -0.6+9-(c+7) = 9-c-7 = 2-4+(a-9) = 4+a-9 = -5+2.6-(k+10) = 2.6-k-10 = -7.4-k
Значения выражений1) -a(b5) = -a(-8) = 83) -a(b(-7)) = -a(87) = -562) (a4)(-b) = -4a(-8) = 324) (-a5)(-b(-2)) = 5a16 = 80a
Общий множитель за скобками в каждом из выражений
1) 2M-2N = 2(M-N
2) 3A-6B = 3(A-2B
3) 6x+10y = 2(3x+5y
4) 3x+3y = 3(x+y
5) -4m-4n = -4(m+n
6) 2c+8d = 2(c+4d
7) 5m-15m = -10
8) 15a-12
9) 20c-24d = 4(5c-6d)
Упрощение выражений
1) 5-(a+3) = 5-a-3 = 2-
2) 2+(-8+c) = 2-8+c = -6+
3) 0.8-(m+3) = 0.8-m-3 = -2.2-
8-(10+b) = -2-
3+(-d-5) = 3-d-5 = -2-
1.4+(n-2) = 1.4+n-2 = -0.6+
9-(c+7) = 9-c-7 = 2-
4+(a-9) = 4+a-9 = -5+
2.6-(k+10) = 2.6-k-10 = -7.4-k
Значения выражений
1) -a(b5) = -a(-8) = 8
3) -a(b(-7)) = -a(87) = -56
2) (a4)(-b) = -4a(-8) = 32
4) (-a5)(-b(-2)) = 5a16 = 80a