= ( 42,4 - 42,3)х( 42,4 + 42,3) = 0,1 х 84,7 = 8,47
Ы, когда завтра экзамен:)
(1/
![a^{ \frac{1}{2} }](https://tex.z-dn.net/?f=+a%5E%7B+%5Cfrac%7B1%7D%7B2%7D+%7D+)
- 2)(a-4
![x^{ \frac{1}{2}} +2](https://tex.z-dn.net/?f=+x%5E%7B+%5Cfrac%7B1%7D%7B2%7D%7D+%2B2)
)
![^{ -\frac{1}{2} }](https://tex.z-dn.net/?f=%5E%7B+-%5Cfrac%7B1%7D%7B2%7D+%7D+)
((1-2a^1/2)/a^1/2)*(1/(a-4a^1/2+2)^1/2)
(1-2a^1/2)/a^1/2 / ((a-4a^1/2+2)^1/2)
1-2
![\sqrt{a} [(/tex] / a*(a^2-4a^1/2+2a))^1/2 1-2[tex] \sqrt{a}](https://tex.z-dn.net/?f=+%5Csqrt%7Ba%7D+%5B%28%2Ftex%5D+%2F+a%2A%28a%5E2-4a%5E1%2F2%2B2a%29%29%5E1%2F2+1-2%5Btex%5D+%5Csqrt%7Ba%7D+)
/ (a^2-4a^3/2+2a)^1/2
1-2
![\sqrt{a}](https://tex.z-dn.net/?f=+%5Csqrt%7Ba%7D+)
/ (a^2-4
![\sqrt{ a^{3} }](https://tex.z-dn.net/?f=+%5Csqrt%7B+a%5E%7B3%7D+%7D+)
+2a)^1/2
1-2
![\sqrt{a}](https://tex.z-dn.net/?f=+%5Csqrt%7Ba%7D+)
/ (a^2-4a
![\sqrt{a}](https://tex.z-dn.net/?f=+%5Csqrt%7Ba%7D+)
+2a)^1/2
Ответ: 1-2
![\sqrt{a}](https://tex.z-dn.net/?f=+%5Csqrt%7Ba%7D+)
/
![\sqrt{ a^{2}-4a \sqrt{a} +2a }](https://tex.z-dn.net/?f=+%5Csqrt%7B+a%5E%7B2%7D-4a+%5Csqrt%7Ba%7D+%2B2a+%7D+)
Объяснение:
решение на фото................
11a - 0,5a² = 2,5a² - 25a
- 0,5a² - 2,5a² + 11a + 25a = 0
3a² + 36a = 0
3a * ( a + 12 ) = 0
3a = 0
a = 0
a + 12 = 0
a = - 12
Ответ:
наименьший ответ это минус 5