Răspuns :
d=7x8=56
c=56x2=112
b=56:2=28
a=28x5=140
axb+cxd=140x28+112x56=3920+6272=10192
c=56x2=112
b=56:2=28
a=28x5=140
axb+cxd=140x28+112x56=3920+6272=10192
a * b + c * d =
a = 5b
d = 56
b = d : 2 => b = 56 : 2 b = 28
c = 2d => c = 2 * 56 c = 112
a = 5 * 28 a = 140
a * b + c * d =
140 * 28 + 112 * 56 =
3920 + 6272 =
10192
a = 5b
d = 56
b = d : 2 => b = 56 : 2 b = 28
c = 2d => c = 2 * 56 c = 112
a = 5 * 28 a = 140
a * b + c * d =
140 * 28 + 112 * 56 =
3920 + 6272 =
10192