计算:2(x^2+3)-3(5-x^2)

计算:2(x^2+3)-3(5-x^2)
2025-06-21 09:37:00
推荐回答(3个)
回答1:


回答2:

2(x²+3)-3(5-x²)=2x²+6-15+3x²=5x²-9

回答3:

2(x^2+3)-3(5-x^2)
=2x²+6-15+3x²
=5x²-9