Question

(2.7)^2-2.3x2.7+(2.3)^3÷(2.7)^3 + (2.3)^2​

Answer 1

2.7. 2x2 + (x ± 1)2 = w2 can be rewritten as (3x ± 1)2 - 3w2 = -2. Some solutions are (3x ± 1, w) = (1,1), (5, 3), (19,11), ...

Answer 2

Step-by-step explanation:

$(2.7)^{2} - 2.3 \times 2.7 + {2.3}^{3} \div {2.7}^{3} + {2.3}^{2}$

$= 7.29 - 6.21 + 0.62 + 5.29$

$= 6.99$