(8.7-0.25-0.25)x[(0.7-0.1)x2+0.3]-(0.55-0.1)x0.25x2 等于多少 谁帮我算下

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(8.7-0.25-0.25)x[(0.7-0.1)x2+0.3]-(0.55-0.1)x0.25x2 等于多少 谁帮我算下
(8.7-0.25-0.25)x[(0.7-0.1)x2+0.3]-(0.55-0.1)x0.25x2 等于多少 谁帮我算下

(8.7-0.25-0.25)x[(0.7-0.1)x2+0.3]-(0.55-0.1)x0.25x2 等于多少 谁帮我算下
原式=8.2*1.5-0.45*0.5=12.3-0.225=12.075

(8.7-0.25-0.25)x[(0.7-0.1)x2+0.3]-(0.55-0.1)x0.25x2 =8.2x1.5-0.45x0.5=12.3-0.225=12.075

(8.7-0.25-0.25)x[(0.7-0.1)x2+0.3]-(0.55-0.1)x0.25x2
=8.2x(0.6x2+0.3)-0.45x0.5
=8.2x1.5-0.15x1.5
=(8.2-0.15)x1.5
=8.05x1.5
=12.075

(8.7-0.25-0.25)x[(0.7-0.1)x2+0.3]-(0.55-0.1)x0.25x2
=8.2x(0.6x2+0.3)-0.45x0.25x2
=8.2x1.5-2.25
=12.2-2.25
=10.05

x-0.25x=0. X-0.25x=0. X-0.25x=0. x-0.25x=2.8+0. 0.25x （x-4)-(x+4)=0.25x 66=X+0.25X求X 0.25x+3.6=x解x x-0.25=0.25x x-0.25x+1=10.4x+0.25x-1 x-0.25x=48 x-35%x=0.25 x-1.75x=0.25 x-0.25x=15 x-0.25x=2.4 (x-3.6)/x=0.25 x-12=0.25x 12.5-0.25X=X