Question

wzory skróconego mnożenia:

zapis obliczeń proszę zapisywać tak: np.51^2=(50+1)^2=2500+100+1=2601

19^2=

71^2=

59*61=

28^2=

72^2=

38^2=

31*29=

88*92=

(-x+3)^2=

(-x-3)^2 =

Answer 1

(20-1)^2=400 - 40 + 1 = 361

(70+1)^2 = 4900 + 140 + 1 = 5041

(60-1)(60+1) = 3599

(30-2)^2= 900 - 120 + 4 = 784

(70+2)^2 = 4900 + 280 + 4 = 5184

(40-2)^2 = 1600 - 160 + 4 = 1444

(30+1)(30-1)=899

(90+2)(90-2) = 8100-4 = 8096

9-6x+x^2

x^2+6x+9