Question

(4a+b)(a+4b)-(13ad+3b^2)
При а=1.02. b= -5.04

Answer 1

4а^2+16ab+ab+4b^2-13ab-3b^2=4a^2+4ab+b^2
4a^2+4ab+b^2=4,1616-20,5632+25,4016=9