Square of 3 * 5.4-12 * 1.2 (calculated by factorization)
3*5.4^2-12*1.2^2
=3(5.4^2-4*1.2^2)
=3(5.4+2*1.2)(5.4-2*1.2)
=3*7.8*3
=70.2
RELATED INFORMATIONS
- 1. How many square meters is 43 mu
- 2. How to calculate one square of length, width and height
- 3. Length 9 meters, width 30 centimeters, ask a person to help calculate how many square meters?
- 4. How to calculate the square of 157 cm
- 5. How to calculate the length and width of 0.6 square meters
- 6. How to calculate the rectangle? How many square
- 7. The length of a rectangle is 1.5 moleculars and 1 meter, and the area is 2 square meters. How many meters is its width? Another rectangle is 8 moleculars and 5 moleculars and 7 moleculars and 6 moleculars
- 8. 1. The length of the rectangle is three times of the width. If the width increases by 4 m and the length decreases by 5 m, then the area increases by 15 square meters, then how many meters are the original length and width of the rectangle 2. The cylindrical special metal with a diameter of 14cm and a length of xcm is processed into a part with a volume of 5200 cubic centimeter by a manufacturer, and the equation listed is?
- 9. If the length of a rectangle is reduced by 3 meters, the area will be reduced by 15 square meters. If the width is increased by 2 meters, the area will be increased by 14 square meters?
- 10. Help me calculate the length of 67 cm, width of 36 cm, height of 49 cm, how many square meters is a three-dimensional six side bag How do I calculate the process I need to work out
- 11. What is the square of 25A - 169
- 12. What is the square of 225-x = 169 - (196-28x + x square) x equal to?
- 13. 169 out of 196 is equal to the quadratic power, I write 13 out of 14. Why is it wrong?
- 14. The length is 169 mm and the width is 160 mm. How many square meters is it? How is it calculated?
- 15. I don't think the formula of Pythagorean theorem is right. 2,3,4cm right triangle 2's Square 4,3's Square 9,4's Square 16, and 4 plus 9 equals 13,16 is greater than 13
- 16. According to the Pythagorean theorem, the square of a plus the square of B equals the square of C. how to calculate the square of 35 plus 12 equals the square of 50
- 17. Why is the square of 3:1 equal to 9:3:3:1
- 18. 123×123+123
- 19. Simple method of 35 × 35 + 65 × 35
- 20. Simple and convenient operation