问题
填空题
当a=3时,4a2=______;当a=5时,2a+a2=______.
答案
(1)当a=3时,
4a2=4×32=4×9=36;
(2)当a=5时,
2a+a2=2×5+52=10+25=35.
故答案为:36,35.
当a=3时,4a2=______;当a=5时,2a+a2=______.
(1)当a=3时,
4a2=4×32=4×9=36;
(2)当a=5时,
2a+a2=2×5+52=10+25=35.
故答案为:36,35.