Ответы
Ответ:
442:
1) (a^2-b^2)/a+b= (a-b)(a+b)/a+b= a-b
2) a-b/a^2-b^2= a-b/(a-b)(a+b)=1/a+b
3)4c^2-9x^2/2c-3x= (2c-3x)(2c+3x)/2c-3x= 2c+3x
4) 25-x^2/5-x= (5-x)(5+x)/5-x= 5+x
443
1) (8-3a)/9a^2-64= 8-3a/( 3a-8)(3a+8)= -1/3a+8
2) 100-49b^2/7b+10=(10-7b)(10+7b)/7b+10= 10-7b
Далее не знаю, честно
Объяснение:
441.
а² - b² (a - b)(a + b)
a) ______ = _________ = a - b
a + b a + b
a - b a - b 1
б) ________ = __________ = _____
a² - b² (a - b)(a + b) a + b
4c² - 9x² (2c - 3x)(2c + 3x)
в) _________ = _______________ = 2c + 3x
2c - 3x 2c - 3x
25 - x² (5 - x)(5 + x)
г) _______ = __________ = 5 + x
5 - x 5 - x
442.
8 - 3a -(3a - 8) 1
a) _______ = ____________ = - ______
9a² - 64 (3a - 8)(3a + 8) 3a + 8
100 - 49b² (10 + 7b)(10 - 7b)
б) ________ = _____________ = 10 - 7b
7b + 10 7b + 10
5у - у² y(5 - y) y
в) _______ = __________ = _____
25 - у² (5 - y)(5 + y) 5 + y
b² - c² (b - c)(b + c) (b - c)(b + c)
г) ________ = ___________ = ______________ =
b⁴n - c⁴n n(b⁴ - c⁴) n(b² - c²)(b² + c²)
(b - c)(b + c) 1
= ________________ = __________
n(b - c)(b + c)(b² + c²) n(b² + c²)
5a³b + 5ab³ 5ab(a² + b²) 5ab 5ab
д) ____________ = _____________ = _____ = __________
a⁴ - b⁴ (a² + b²)(a² - b²) a² - b² (a - b)(a + b)