Question

可以帮我写下画横线那题的化简过程吗

Answer 1

解 [-2(m+3)]^2+[2(1-4m^2)]^2-4(16m^4+9)

=4(m+3)^2+4(1-4m^2)^2-4(16m^4+9)

=4(m^2+6m+9)+4(1-8m^2+16m^4)-4(16m^4+9)

=4m^2+24m+36+4-32m^2+64m^4-64m^4-36

=-28m^2+24m+4