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Laws of indices
1. If 9^x+2 = 36, then what is 3^2x ? 2. a^n-2 + a^n-1 / a^n-2 = ? 3. Convert the decimal number 2^12 + 2^7 + 2^5 + 12 to a binary number. 4. Express 11.5^15 in scientific notation and correct to 3 significant figures. 5. Simplify x^3 - 27/x^3
最佳解答:
9^x+2 = 36, then what is 3^2x ? 9^x*9^2=36 3^2x=4/9 __________________________ a^n-2 + a^n-1 / a^n-2 = ? (a^n-1)(a^-1+1)/(a^n-1)(a^-1) (a^-1+1)/(a^-1) (a^-1)/(a^-1)+(1/a^-1) 1+a _________________________ Convert the decimal number 2^12 + 2^7 + 2^5 + 12 to a binary number. I have not learnt ______________________ Express 11.5x10^15 in scientific notation and correct to 3 significant figures. 1.15x10^16 ___________________________________ x^3 - 27/x^3 (x-3)(x^2+3x+9)/x^3
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Laws of indices
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發問:1. If 9^x+2 = 36, then what is 3^2x ? 2. a^n-2 + a^n-1 / a^n-2 = ? 3. Convert the decimal number 2^12 + 2^7 + 2^5 + 12 to a binary number. 4. Express 11.5^15 in scientific notation and correct to 3 significant figures. 5. Simplify x^3 - 27/x^3
最佳解答:
9^x+2 = 36, then what is 3^2x ? 9^x*9^2=36 3^2x=4/9 __________________________ a^n-2 + a^n-1 / a^n-2 = ? (a^n-1)(a^-1+1)/(a^n-1)(a^-1) (a^-1+1)/(a^-1) (a^-1)/(a^-1)+(1/a^-1) 1+a _________________________ Convert the decimal number 2^12 + 2^7 + 2^5 + 12 to a binary number. I have not learnt ______________________ Express 11.5x10^15 in scientific notation and correct to 3 significant figures. 1.15x10^16 ___________________________________ x^3 - 27/x^3 (x-3)(x^2+3x+9)/x^3
其他解答:
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