How to calculate 1.38 times 1.2 times 0.5

（1.2x0.5)x1.38

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1. 4 / 9 times () = 7 / 8 divided by () = (): 16 = 0.75 = () / ()?
2. 4.4 times 3 / 4 plus 3.6 divided by 1 and 1 / 3 plus 0.75 times 2
3. 3 & # 179; - 4 * 3 & # 178; + 10 * 3 = the fourth power of 3 - 4 * 3 & # 179; + 10 * 3 & # 178; = and find out the rule
4. X = 1-A, a ≠ 1, x64 = 1-B simplify (1 + x) (1 + x2) (1 + x4) (1 + x8) (1 + x16) (1 + X32)
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8. The second power of polynomial 2x + the third power of 4x - 3 is the - degree - term formula, and the constant term is -
9. In the polynomial 6a-2a3x3y-8 + 4x5, the coefficients and constants of the highest order terms are () A. 2 and 8b. 4 and - 8C. 6 and 8D. - 2 and - 8
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20. As shown in the figure, in diamond ABCD, e and F are the points on BC and CD respectively, ∠ B = ∠ EAF = 60 ° and ∠ BAE = 20 ° to find the degree of ∠ CEF