Question

giúp em vs

Answer 1

\(a.34^2+66^2+68\cdot66\\ =34^2+2\cdot34\cdot66+66^2\\ =\left(34+66\right)^2\\ =100^2\\ =10000\\ b.74^2+24^2-48\cdot74\\ =74^2-2\cdot24\cdot74+24^2\\ =\left(74-24\right)^2\\ =50^2\\ =2500\)

Answer 2

a, \(\begin{align*} 34^{2}+66^{2}+68\cdot66 &= 34^{2}+2\cdot34\cdot66+66^{2} \\ &= (34+66)^{2} \\ &= 100^{2} \\ &= \boxed{10000} \end{align*} \)

b, \(\begin{align*} 74^{2}+24^{2}-48\cdot74 &= 74^{2}-2\cdot24\cdot74+24^{2} \\ &= (74-24)^{2} \\ &= 50^{2} \\ &= \boxed{2500} \end{align*} \)