A 7y x(21-10)b(x+5) X(5X-1)= By Admin ReiPosted on October 29, 2022 A 7y x(21-10)b(x+5) X(5X-1)= Jawaban: a) 7y(21-10)= 7y(1) =7y b) (x+5)(5x-1) =5×2-x+25x-5 =5×2+24x-5