Question

Решите уравнение:
(8а-9)²-16а(4а-5)=-67

Answer 1

$(8a-9)^2-16a(4a-5)=-67 \ 64a^2-144a+81-64a^2+80a=-67 \ -64a+81=-67 \ -64a=-148 \ a=frac{148}{64}=frac{37}{16}=2frac{5}{16} \ a=2frac{5}{16}$

Answer 2

$(8a-9)^2-16a(4a-5)=-67 \ 64 a^2 - 144 a + 81 - 64a^2+80a=-67 \ 81-64a=-67 \ 148=64a \ a = frac{148}{64}$