A = x.
b = x - 11.
a * b = 180
x * (x - 11) = 180
x² - 11x -180 = 0
D = 841
x₁ = (11 + 29)/2 = 20
x₂ = (11 - 29)/2 = -9
a₁ = 20 и a₂ = -9
b₁ = x - 11 = 9
b₂ = -20
100=10^2
1000=10^3
(10^2)^5=10^10
(10^3)^2=10^6
Поэтому:
100^5*1000^2=10^10*10^6=10^16
Или 1 000 000 000 000 000 0
3х*(х-4у)................
1) x(4x^2-36x+81-450-60x-2x^2)
x(2x^2-96x-369)
3) x^2+4x+4-(x^2-9)
X^2+4x+4-x^2+9
4x+13
4) 49a^2-25b^2-16a^2-56ab-49b^2
33a^2-74b^2-56ab