$1.$ Draw the logic diagram using only two input NAND gates to implement the following expression

$F=(AB+A^{\text{'}}{B}^{\text{'}})(C^{\text{'}}+C^{\text{'}}D).$

$2.$ Minimize the following expressions using K$-$map

$F(A,B,C,D)={\displaystyle \underset{?}{\overset{?}{}}}m(4,5,7,12,14,15)+{\displaystyle \underset{d}{\overset{?}{}}}(3,8,0$

$)$

Please refer to the screenshot to see the question, there some errors in the chegg transcript.

Please make the kmap using pen and paper and make the logic diagram on paper too. Thank you