Question

помогите с алгеброй до четверга

e1353af1441a8a4327079d0e60b720f5.pdf

Answer 1

Ответ:

1)

$\frac{7^9*7^5}{7^{12}} =\frac{7^{14}}{7^{12}} = 7^2 = 49$

Ответ: а) 49.

2)

$(a^4)^6 : (a^3)^3 = a^{24} : a^9 = a^{15}$

Ответ: в) $a^{15}$

3)

$5^6 * 5^x = 5^{10}\\5^{x+6} = 5^{10}\\x+6 = 10\\x=4$

Ответ: в) 4

4)

$5^6*5x = 5^{10}\\5^7*x = 5^{10}\\x = 5^{10-7}\\x = 5^3\\x = 125$

5)

$3x*b^2x = 3b^2x^2\\3x*ay^2 = 3axy^2\\3x * (-4a^2x^3) = -12a^2x^4\\\\10b^3 * 2ab = 20ab^4\\10b^3 * b^2x = 10b^5x\\10b^3 * ay^2 = 10ab^3y^2\\10b^3 * (-4a^2x^3) = -40a^2b^3x^3\\\\5a^2b * 2ab = 10a^3b^2\\5a^2b * b^2x = 5a^2b^3\\5a^2b * ay^2 = 5a^3by^2\\5a^2b * (-4a^2x^3) = -20a^4bx^3\\\\x^2y * 2ab = 2abx^2y\\x^2y * b^2x = b^2x^3y\\x^2y * ay^2 = ax^2y^3$

Answer 2

No 1

б)7

No 2

$в)a {}^{15}$

No 3

в) 4

No 4

a)125