446-ա,ե․
ա) 63 * 52/33 * 24
63 * 52/33 * 24 =
= 23 * 33 * 52/33 * 24 =
= 52/2 =
= 25/2 =
= 12,5
ե) (3 1/3)3 * (0,1)3/0,15
(3 1/3)3 * (0,1)3/0,15 =
= (10/3)3 * (0,1)3/3 =
= (1/3)3/3 =
= 1/33/3 =
= (1/34) =
= 1/81
451-ա,ե,է․ վերլուծեք արտադրիչների․
ա) a(x + y) + b(x + y)
a(x + y) + b(x + y) =
= (x + y)(a + b)
ե) n(x – y) – x + y
n(x – y) – x + y =
= n(x – y) – (x – y) =
= (n – 1)(x – y)
է) ac + ad – bc – bd
ac + ad – bc – bd =
= a(c + d) – b(c + d) =
= (a + b)(c + d)
459-ա,է․ Պարզեցրեք արտահայտությունը.
ա) 6a/4 – 9a2 + 1/3a – 2
6a/4 – 9a2 + 1/3a – 2 =
= 6a/(2 – 3a)(2 + 3a) + 1/3a – 2 =
= -6a/(3a – 2)(2 + 3a) + 1/3a – 2 =
= -6a + 2 + 3a/(3a – 2)(2 + 3a) =
= 2 – 3a/(3a – 2)(2 + 3a) =
= –3a – 2/(3a – 2)(2 + 3a) =
= –1/(2 + 3a)
ե) 2 – 3/a – 3
2 – 3/a – 3 =
= 2(a – 3) – 3/a – 3 =
= 2a – 6 – 3/a – 3 =
= 2a – 9/a – 3
471-ա․ Պարզեցրեք արտահայտությունը․
ա) √8 + 5√9 – 3√8 + 5√7 + 2√8 – 6√7
√8 + 5√9 – 3√8 + 5√7 + 2√8 – 6√7 =
= 5 * 3 – √7 =
= 15 – √7
472-ա,գ․ Պարզեցրեք արտահայտությունը․
ա) √3 * √12
√3 * √12 =
= √(3 * 12) =
= √36 =
= 6
գ) √60 : √5
√60 : √5 =
= √(60/5) =
= √12 =
= 2√3