załącznik
klasa 2 gim
wzory skróconego mnożenia
1.
(½x+4y)²=¼x²+_+16y²
¼x²+4xy+16y²=¼x²+4xy+16y²
2.
a)
(a-√3c)(a+√3c)=a²-√3c²
a²-3c²=a²-√3c² NIE RÓWNE
b)(3a+√2)(3a-√2)=9a²-2
9a²-2=9a²-2 RÓWNE
c)
(6a+3)(6a-3)=36a²+9
36a²-9=36a²+9 NIE RÓWNE
d)(5a-2c)(5a+2c)=25a-4c
25a²-4c²=25a-4c NIE RÓWNE
3.
√2/(√3-√2)+√3/(√3+√2)=
√2(√3+√2)/((√3-√2)(√3+√2))+√3(√3-√2)/((√3-√2)(√3+√2))
(√6+2)/(3-2)+(3-√6)/(3-2)=
√6+2+3-√6=5
4.
((x-2y)²+(2x+y)²)/5*(x²-y²)
(x²-4xy+4y²+4x²+4xy+y²)(x²-y²)/5=
(5x²+5y²)(x²-y²)/5=
x⁴-y⁴
10⁴-(-1)⁴=
10000-1=9999
8.
(√3+1)²=3+2√3+1=4+2√3
b)(√10-2)²=10-4√10+4=14-4√10
(√3-√2)²=3-2√6+2=1-2√6
d)
(√8+√2)²=8+2√16+2=10+8=18
e)
(√5-1)(√5+1)=5-1=4
f)
(√6+√3)(√6-√3)=6-3=3
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1.
(½x+4y)²=¼x²+_+16y²
¼x²+4xy+16y²=¼x²+4xy+16y²
2.
a)
(a-√3c)(a+√3c)=a²-√3c²
a²-3c²=a²-√3c² NIE RÓWNE
b)
(3a+√2)(3a-√2)=9a²-2
9a²-2=9a²-2 RÓWNE
c)
(6a+3)(6a-3)=36a²+9
36a²-9=36a²+9 NIE RÓWNE
d)
(5a-2c)(5a+2c)=25a-4c
25a²-4c²=25a-4c NIE RÓWNE
3.
√2/(√3-√2)+√3/(√3+√2)=
√2(√3+√2)/((√3-√2)(√3+√2))+√3(√3-√2)/((√3-√2)(√3+√2))
(√6+2)/(3-2)+(3-√6)/(3-2)=
√6+2+3-√6=5
4.
((x-2y)²+(2x+y)²)/5*(x²-y²)
(x²-4xy+4y²+4x²+4xy+y²)(x²-y²)/5=
(5x²+5y²)(x²-y²)/5=
x⁴-y⁴
10⁴-(-1)⁴=
10000-1=9999
8.
a)
(√3+1)²=3+2√3+1=4+2√3
b)
(√10-2)²=10-4√10+4=14-4√10
c)
(√3-√2)²=3-2√6+2=1-2√6
d)
(√8+√2)²=8+2√16+2=10+8=18
e)
(√5-1)(√5+1)=5-1=4
f)
(√6+√3)(√6-√3)=6-3=3