Question

А) 4(2x-10)-2(10-2x)+5x-14= , при x=-4 б-5(x+2y)-8x+4y-6= , при x= -1 , y=3 HELP ME PLS

Answer 1

4*(-18)-2*18-20-14=-72-36-20-14=-142
-5*5+8+12-6=-25+8+12-6=-11

Answer 2

4(2x-10)-2(10-2x)+5x-14=8х-40-20+4х+5х-14=17х-74
17*(-4)-74=-68-74=-142
-5(x+2y)-8x+4y-6=-5х-10у-8х+4у-6=-13х-6у-6
-13*(-1)-6*3-6=13-18-6=-11