Mathematical simplification problem 1, -9(x-2)-y(x-5)? (1) simplifies the whole equation. (2) When x=5, find the solution of y.
2、5(9+a)×b-5(5+b)×a？ (1) simplifies the whole equation. (2) When a=5/7, find the value of the formula.
3、62g+62(g+b)-b？ (1) simplifies the whole equation. (2) When g=5/7, find the solution of b.
4、3(x+y)-5(4+x)+2y？ Simplify the whole formula.
5 、( x+y)(x-y)？ Simplify the whole formula.
6、2ab+a×a-b？ Simplify the whole formula.
7、5.6x+4(x+y)-y？ Simplify the whole formula.
8.6.4(x+2.9)-y+2(x-y) simplifies the whole formula.
9.(2.5+x)(5.2+y) Simplify the whole formula.
10， 10，a+b=2，a-b=- 1。 Find the value of 3(a+b)2(a-b)2-5(a+b)2×(a-b)2.
Simplify the calculation problem 1. -3 (x2-xy)-x (-2y+2x) 2 (-X5)？ x3n- 1+x3n？ (-x)4
2.(x+2)(y+3)-(x+ 1)(y-2)⑷(-2m2n)3？ mn+(-7m7n 12)0-2(mn)-4？ m 1 1？ n8
3.(5x2y3-4x3y2+6x)÷6x, where x =-2 and y = 2 [6] (3mn+1) (3mn-1)-(3mn-2) 2.
4.9992- 1⑻20032
5.-2.5×(-4.8)×(0.09)÷(-0.27)
3.3ab-4ab+8ab-7ab+ab=______。
4.7x-(5x-5y)-y=______。
5.23 a3 BC 2- 15 ab2c+8 ABC-24 a3 BC 2-8 ABC = _ _ _ _ _ _。
6.-7x 2+6x+ 13 x2-4x-5x 2 = _ _ _ _ _ _。
7.2y+(-2y+5)-(3y+2)=______。
8.(2 x2-3xy+4 y2)+(x2+2xy-3 y2)= _ _ _ _ _ _。
9.2a-(3a-2 b+2)+(3a-4 b- 1)= _ _ _ _ _ _。
10.-6x2-7x2+ 15x2-2x2=______。
Mathematical simplified calculation 1. It is known that A=x3-2x2+x-4, B=2x3-5x+3, and a+b = _ _ _ _.
2. Given A=x3-2x2+x-4 and B=2x3-5x+3, calculate a-b = _ _ _ _.
3. If a=-0.2 and b=0.5, the value of algebraic expression -(|a2b|-|ab2|) is _ _ _ _ _.
4.3a-(2a-3b)+3(a-2b)-b=______。
5. If a polynomial subtracts 3m4-m3-2m+5 to get -2m4-3m3-2m2- 1, then this polynomial is equal to _ _ _ _.
6.-(2 x2-y2)-[2 y2-(x2+2xy)]= _ _ _ _ _ _。
7. If -3a3b2 and 5ax- 1by+2 are similar terms, then x = _ _ _ _ _, and y = _ _ _ _ _.
8.(-y+6+3 y4-y3)-(2 y2-3 y3+y4-7)= _ _ _ _ _ _。
9. The result of simplifying the algebraic expression 4x2-[7x2-5x-3( 1-2x+x2)] is _ _ _ _.
10.2 a-B2+c-D3 = 2a+()-D3 = 2a-D3-()= c-()。
The above is some information about mathematical simplification, I hope it will help you.