It's easy for you!1.x^2-5x+6=(x^2-1)-(5x+_____)2.a^2-b^2=(a^2+ab)-(_____+b^2)3.____-3(x^2-2b)=2x^2-b4.把多项式写成两个二次二项式的和:x^2+y^2-X+y=____5.已知P=2a^2+4ab-3b^2+2,Q=_____-a^2-6ab-b^2-1,则2P+4Q=____

It's easy for you!1.x^2-5x+6=(x^2-1)-(5x+_____)2.a^2-b^2=(a^2+ab)-(_____+b^2)3.____-3(x^2-2b)=2x^2-b4.把多项式写成两个二次二项式的和:x^2+y^2-X+y=____5.已知P=2a^2+4ab-3b^2+2,Q=_____-a^2-6ab-b^2-1,则2P+4Q=____
It's easy for you!
1.x^2-5x+6=(x^2-1)-(5x+_____)
2.a^2-b^2=(a^2+ab)-(_____+b^2)
3.____-3(x^2-2b)=2x^2-b
4.把多项式写成两个二次二项式的和:x^2+y^2-X+y=____
5.已知P=2a^2+4ab-3b^2+2,Q=_____-a^2-6ab-b^2-1,则2P+4Q=____

It's easy for you!1.x^2-5x+6=(x^2-1)-(5x+_____)2.a^2-b^2=(a^2+ab)-(_____+b^2)3.____-3(x^2-2b)=2x^2-b4.把多项式写成两个二次二项式的和:x^2+y^2-X+y=____5.已知P=2a^2+4ab-3b^2+2,Q=_____-a^2-6ab-b^2-1,则2P+4Q=____
-7
ab
5x^2-7b
(x^2-X)+ (y^2+y)
第4题少条件,没办法作