osja38
A) (x-10)^-x(x+80)=(x-10)(x-10)-x^-80x=x^-10x-10x+100-x^-80x=-100x+100=-100*0.97+100=-97+100=3 b) (2x+9)^-x(4x+31)=(2x+9)(2x+9)-4x^-31x=4x^+18x+18x+81-4x^-31x=5x+81=5*(-16.2)+81=81+81=162 B) (2x+0.5)^-(2x-0.5)^=(2x+0.5)(2x+0.5)-(2x-0.5)(2x-0.5)=4x^+1x+1x+0.25-4x^+1x+1x+0.25=4x+0.5=(-3.5)4+0.5=14+0.5=14.5 г)(0.1x-8)(0.1x-8)+(0.1x+8)(0.1x+8)=0.01x^-0.8x-0.8x+64+0.01x^+0.8x+0.8x+64=0.02x^+128=0.04+128=128.0
Answers & Comments
b) (2x+9)^-x(4x+31)=(2x+9)(2x+9)-4x^-31x=4x^+18x+18x+81-4x^-31x=5x+81=5*(-16.2)+81=81+81=162
B) (2x+0.5)^-(2x-0.5)^=(2x+0.5)(2x+0.5)-(2x-0.5)(2x-0.5)=4x^+1x+1x+0.25-4x^+1x+1x+0.25=4x+0.5=(-3.5)4+0.5=14+0.5=14.5
г)(0.1x-8)(0.1x-8)+(0.1x+8)(0.1x+8)=0.01x^-0.8x-0.8x+64+0.01x^+0.8x+0.8x+64=0.02x^+128=0.04+128=128.0