Question

помогите пожалуйста :..)​

Answer 1

1) (x + 5)(x + 9) = x² + 9x + 5x + 45 = x² + 14x + 45

2) (-3x²yz³)² = -27$x^{4}$y$z^{6}$

1) x² - 36 = (x-6)(x+6)

2) 4x²-25y² = (2x-5y)(2x+5y)

5x + 3y = 4

x = 2; y = -2 (2;-2)

1) $(x^{3})^{4}$ * $x^{7}$ = $x^{7}$ * $x^{7}$ = $x^{14}$

2) $a^{9}$ : a³ = $a^{6}$

3) $(m^{5})^{3}$ = $m^{15}$

3(0.2x - 0.5) - 4(0.3x - 0.5) = 9.7 + 4x

0.6x - 1.5 - 1.2x + 2 = 9.7 + 4x

-0.6x + 0.5 = 9.7 + 4x

-0.6x - 4x = 9.7 - 0.5

-4.6x = 9.2

x = -2

$(4+6)^{0}$ * 2 = 1 * 2 = 2