- 计算:aab-2a3b+3abab34(a>0).
- 计算:(1)28-1212+613(2)(3-2)2+(5-3)(5+3).
- 计算或化简:(1)15×53(2)x3+x2y(x≥0,y≥0)(3)24(23+273)(4)7a
- 38-218+532.
- 计算:3242-323的结果是______.
- 计算:(0.5- 213) +( -18+75).
- 计算:25x+94x-16x
- (1)计算:212-613+348; (2)解方程:2x2+1=3x.
- 27-12+45.
- 50a+2a2-38a.
- 直接填写计算结果:(7)2=______;27-3=______.
- (1)218-32(2)13×12-623÷2.
- (1)解方程:(x-3)2-9=0.(2)解方程:x2-2x=2x+1.(3)计算:27-1513+1448.
- 计算:2-8+32.
- 计算:27-3=______,方程x2=2x的根是 ______.