(5a^2+2a-1)-4(3-8a+a^2)化简
问题描述:
(5a^2+2a-1)-4(3-8a+a^2)
化简
答
46a^2+52a-22
答
(5a^2+2a-1)-4(3-8a+a^2)
=5a^2+2a-1-12+32a-4a^2
=5a^2-4a^2+32a+2a-1-12
=a^2+34a-13