Question

51²-41²= 63²-53²= 117²-17²= 164²-64²= 125²-25²= 14²-86²= 37²-63²= 81²-19²= 77²-23²= 68²-32²= 55²-53²= 41²-21²= 35²-55²= 22²-42²=

Answer 1

51²-41²=(51-41)*(51+41)=10*92=920
63²-53²=(63-53)*(63+53)=10*116=1160
117²-17²=(117-17)*(117+17)=100*134=13400
164²-64²=(164-64)*(164+64)=100*228=2280
125²-25²=(125-25)*(125+25)=100*150=15000
14²-86²=(14-86)*(14+86)=(-72)*100=-7200
37²-63²=(37-63)*(37+63)=(-26)*100=-2600
81²-19²=(81-19)*(81+19)=62*100=6200
77²-23²=(77-23)*(77+23)=54*100=5400
68²-32²=(68-32)*(68+32)=36*100=3600
55²-53²=(55-53)*(55+53)=2*108=216
41²-21²=(41-21)*(41+21)=20*62=1240
35²-55²=(35-55)*(35+55)=(-20)*90=-1800
22²-42²=(22-42)*(22+42)=(-20)*64=-1280

Answer 2

51²-41² = (51+41)(51-41) = 92 x 10 = 920

63²-53² = (63+53)(63-53) = 116 x 10 = 1160

117²-17² = (117+17)(117-17) = 134 x 100 = 13400

164²-64² = (164+64)(164-64) = 228 x 100 = 22800

125²-25² = (125+25)(125-25) = 150 x 100 = 15000

14²-86² = (86-14)(86+14) = -72 x 100 = -7200

37²-63² = (63-37)(63+37) = -26 x 100 = -2600

81²-19² = (81+19)(81-19) = 100 x 62 = 6200

77²-23² = (77+23)(77-23) = 100 x 54 = 5400

68²-32² = (68+32)(68-32) = 100 x 36 = 3600

55²-53² = (55+53)(55-53) = 108 x 2 = 216

41²-21² = (41+21)(41-21) = 62 x 20 = 1240

35²-55² = (55-35)(55+35) = -20 x 90 = -1800

22²-42² = (42-22)(42+22) = -20 x 64 = -1280

Therefore,

51²-41²= 920

63²-53²= 1160

117²-17²= 13400

164²-64²= 22800

125²-25²= 15000

14²-86²= -7200

37²-63²= -2600

81²-19²= 6200

77²-23²= 5400

68²-32²= 3600

55²-53²= 216

41²-21²= 1240

35²-55²= -1800

22²-42²= -1280