(2х-1)(15+9х)-6x(3x-5)=87
1) (2х-1)(15+9х)=30x-15+18x²-9x=18x²+21x-15
2) -6x(3x-5)= - 18x²+30x
(2х-1)(15+9х)-6x(3x-5)=87
18x²+21x-15 - 18x²+30x =87
18x²-18x²+21x+30x=87+15
51х=102
х=102 : 51
х=2
Ответ: х=2
<span>6х^2=1/24
х^2=1/24:6
х^2=1/144
x=1/12</span>
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(x + 4)⁰ + (38 - x²)³
Если x = - 6 , то
(- 6 + 4)⁰ + [38 - (- 6)²]³ = (- 2)⁰ + (38 - 36)³ = 1 + 2³ = 1 + 8 = 9