(6/5a^3x^4-0.99x^3)÷3/5ax^3
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(6/5a^3x^4-0.99x^3)÷3/5ax^3(6/5a^3x^4-0.99x^3)÷3/5ax^3(6/5a^3x^4-0.99x^3)÷3/5ax^3x²+4xy-4y²
(6/5a^3x^4-0.99x^3)÷3/5ax^3
(6/5a^3x^4-0.99x^3)÷3/5ax^3
(6/5a^3x^4-0.99x^3)÷3/5ax^3
x²+4xy-4y²
=x²+4xy+4y²-8y²
=(x+2y)²-8y²
=(x+2y+2√2y)(x+2y-2√2y)
ab(c²-d²)-(a²-b²)cd
=abc²-abd²-a²cd+b²cd
=bc(ac+bd)-ad(ac+bd)
=(ac+bd)(bc-ad)
(6/5a^3x^4-0.99x^3)÷3/5ax^3
=6/5a^3x^4÷3/5ax^3-0.99x^3÷3/5ax^3
=2a^2x-1.65/a
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
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