初中数学问题(高悬赏)(要过程)
15×√14-6×√1419×√17×4×√17=(-)×√14=(×)×(×)=9√14=76×17=(-11)+(+16)+(-5分之2)=+(-)+(-5分之2)=...
15×√14-6×√14 19× √17×4×√17
=( - )×√14 =( × )×( × )
=9√14 =76×17
=
(-11)+(+16)+(-5分之2)
=+( - )+(-5分之2)
=(+5)+(-5分之2)
=+( - )
=+
(-5)×(+5分之4)+(-5)×(-5分之4)
=-(5×5分之4)+o(圈内填运算符号)(5×5分之4)
=(-4)+( )
=( )
①(+7.3)+(+3.7) ②(-42)+(-16)+(+18)
③ 0+(-39.9) ④(+2/5)+(-1/6)+(+2/5)+(+1/6)
①5√13×4×2√13(2√13=2×√13)
②2√2-√2+10√2
③(-1/2)×(-2/3)×(-3/4)×(-4/5)
④-(3)²×(-3)²
√代表根号 展开
=( - )×√14 =( × )×( × )
=9√14 =76×17
=
(-11)+(+16)+(-5分之2)
=+( - )+(-5分之2)
=(+5)+(-5分之2)
=+( - )
=+
(-5)×(+5分之4)+(-5)×(-5分之4)
=-(5×5分之4)+o(圈内填运算符号)(5×5分之4)
=(-4)+( )
=( )
①(+7.3)+(+3.7) ②(-42)+(-16)+(+18)
③ 0+(-39.9) ④(+2/5)+(-1/6)+(+2/5)+(+1/6)
①5√13×4×2√13(2√13=2×√13)
②2√2-√2+10√2
③(-1/2)×(-2/3)×(-3/4)×(-4/5)
④-(3)²×(-3)²
√代表根号 展开
2个回答
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15×√14-6×√14 19× √17×4×√17
=( 15 -6 )×√14 =( 19×4 )×( √17× √17)
=9√14 =76×17
=1292
(-11)+(+16)+(-5分之2)
=+( 16 -11 )+(-5分之2)
=(+5)+(-5分之2)
=+( 5-5分之2 )
=+4又5分之3
(-5)×(+5分之4)+(-5)×(-5分之4)
=-(5×5分之4)+(+)(5×5分之4)
=(-4)+(4 )
=( 0 )
①(+7.3)+(+3.7)腔桥 ②(-42)+(-16)+(+18)
=+(7.3+3.7) =-(42+16-18)
=+11 =-(40)
=-40
③ 0+(-39.9) ④(+2/5)+(-1/6)+(+2/5)+(+1/6)
=0-39.9 =+(2/5+2/5)+(1/6-1/6)
=-39.9 =+4/5+0
=+4/5
①5√13×4×2√13(2√13=2×√13)
=4×5×2×√13×√13
=40×13
=520
②2√2-√2+10√2
=√2×(2-1+10)
=√2×9
=9√2
③(-1/2)×(-2/3)×(-3/纤渣4)×(-4/5)
=+(1/2×2/3×3/4×4/5)
=+1/5
④-(毁圆悄3)²×(-3)²
=(-9)×9
=-81
=( 15 -6 )×√14 =( 19×4 )×( √17× √17)
=9√14 =76×17
=1292
(-11)+(+16)+(-5分之2)
=+( 16 -11 )+(-5分之2)
=(+5)+(-5分之2)
=+( 5-5分之2 )
=+4又5分之3
(-5)×(+5分之4)+(-5)×(-5分之4)
=-(5×5分之4)+(+)(5×5分之4)
=(-4)+(4 )
=( 0 )
①(+7.3)+(+3.7)腔桥 ②(-42)+(-16)+(+18)
=+(7.3+3.7) =-(42+16-18)
=+11 =-(40)
=-40
③ 0+(-39.9) ④(+2/5)+(-1/6)+(+2/5)+(+1/6)
=0-39.9 =+(2/5+2/5)+(1/6-1/6)
=-39.9 =+4/5+0
=+4/5
①5√13×4×2√13(2√13=2×√13)
=4×5×2×√13×√13
=40×13
=520
②2√2-√2+10√2
=√2×(2-1+10)
=√2×9
=9√2
③(-1/2)×(-2/3)×(-3/纤渣4)×(-4/5)
=+(1/2×2/3×3/4×4/5)
=+1/5
④-(毁圆悄3)²×(-3)²
=(-9)×9
=-81
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