1. Oblicz wartość liczbową wyrażenia 4x do potęgi 2 - 5y+3x dla x=-2, y=0,2
2. Wykonaj działania
a) (4a-36+3)+(-5a-2b+4)
b) (2x+4y-7) - (-8x+6y-3)
c) (4x+3y)-(11x-3y)+(5x-10)
d) 6(1,5,+3p=3,5)
e) 4(2a-b)-3(5b-a)
3. Wykonaj wskazane działania
a) x(do potegi 2)+6x(do potegi 2)-3x(do potegi 2)-x(do potegi 2)-7x(do potegi 2)
b) (3y-4)+(6y-6)
c) (8a+3)-(9-4a)
d) 8(-4x+2y-5)
e) 3(3x-y)+(-2x+2y)-(-3x-5)
f) -6(2x-2y)-2(5x-3y)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
zad 1
4*(-2)²-5*0,2+3*(-2)=4*4-5*0,2+3(-2)=16-5*0,2+3(-2)=16-1+3(-2)=15+3(-2)=15+(-3*2)=
=15+(-6)=15-6=9
zad 2
a) (4a-36+3)+(-5a-2b+4)=4a-33+(-5a-2b+4)=4a-33-5a-2b+4= -a-33-2b+4= -a-29-2b
b) (2x+4y-7) - (-8x+6y-3)=2x+4y-7+8x-6y+3=10x+4y-7-6y+3=10x-2y-7+3=10x-2y-4
c) (4x+3y)-(11x-3y)+(5x-10)=4x+3y-11x+3y+5x-10= -7x+3y+3y+5x-10= -7x+6y+5x-10=
= -2x+6y-10
d) 6(1,5,+3p+3,5)=6(5+3p)=30+18p
e) 4(2a-b)-3(5b-a)=8a-4b-3(5b-a)=8a-4b-(15b-3a)=8a-4b-15b+3a=8a-19b+3a=11a-19b
zad 3
a) x²+6x²-3x²-x²-7x²=7x²-3x²-x²-7x²=4x²-x²-7x²=3x²-7x²= -4x²
b) (3y-4)+(6y-6)=9y-4-6=9y-10
c) (8a+3)-(9-4a)=8a+3-9+4a=8a-6+4a=12a-6
d) 8(-4x+2y-5)= -32x+16y-40
e) 3(3x-y)+(-2x+2y)-(-3x-5)=9x-3y+(-2x+2y)-(-3x-5)=9x-3y-2x+2y-(-3x-5)=7x-3y+2y-(-3x-5)=
=7x-y-(-3x-5)=7x-y+3x+5=10x-y+5
f) -6(2x-2y)-2(5x-3y)= -(12x-12y)-2(5x-3y)= -12x+12y-2(5x-3y)= -12x+12y-(10x-6y)=
= 12x+12y-10x+6y= -22x+12y+6y= -22x+18y
1. Oblicz wartość liczbową wyrażenia
4x^ 2 - 5y+3x = 4 * (-2)^2 - 5*0,2 + 3 * (-2)=4 *4 -1-6= 16-7 = 9
dla x=-2, y=0,2
2. Wykonaj działania
a)
(4a-36+3)+(-5a-2b+4)= 4a-36+3-5a-2b +4= - a - 2b -29
b)
(2x+4y-7) - (-8x+6y-3) = 2x+4y - 7 +8x - 6y +3 =10x -2y - 4
c)
(4x+3y)-(11x-3y)+(5x-10)= 4x + 3y - 11x + 3y + 5x -10 = -2x +6y -10
d)
6(1,5,+3p+3,5)= 9 + 18 p + 21= 18p + 20
e)
4(2a-b)-3(5b-a)= 8a -4b +15b +3a = 11a + 11b
3. Wykonaj wskazane działania
a)
x^2 +6x^2 -3x^2 - x^2 -7x^2= 7x^2 -11x^2= 4x^2
b)
(3y-4)+(6y-6)= 3y-4 +6y -6 = 9 y - 10
c)
(8a+3)-(9-4a)= 8a + 3 - 9 +4a= 12a - 6
d)
8(-4x+2y-5) = -32x + 16y -40
e)
3(3x-y)+(-2x+2y)-(-3x-5) = 9x - 3y -2x + 2y + 3x +5= 10x - y +5
f)
-6(2x-2y)-2(5x-3y) = -12x + 12y - 10x + 6y=-22x + 18y
(^2--------------->oznacza do potęgi drugiej)