- 2 ⁴ + 5 x 10 ⁻³
= 16 + 0.005
= 16.005
( 3 ⁻² - 2 ) x 3 ³
= ( 1/9 - 2 ) x 27
= ( 1/9 - 18/9 ) x 27
= - 17/ 9 x 27
= - 459 /9 = - 51
A = 15 x 7 x 10 ⁻¹⁸ x 10 ¹² : 10 ⁷ x 1.4
= 105 x 10 ⁻⁶ : 1.4 x 10 ⁷
=75 x 10 ⁻¹³
= 7.5 x 10 ⁻¹²
B = - 350 x 10 ⁴² + 0.415 x 10 ⁴⁵
= - 3.5 x 10 ⁴⁴ + 4.15 x 10 ⁴⁴
= 0.65 x 10 ⁴⁴
= 6.5 x 10 ⁴³
