In the problem (a+4)^2 how do I express each square as a trinomial? would the naswer be a^2+8a+16? or 16a? I don't know for sure.
2006-12-06 14:26:45 · 7 answers · asked by snape_fan_2005 2 in Science & Mathematics ➔ Mathematics
Yes, your first answer...complete the indicated multiplication to get a^2 + 8a + 16.
2006-12-06 14:32:42 · answer #1 · answered by NvestR3322 2 · 0⤊ 0⤋
All you have to do is rewrite the square:
(a+4)^2 is equal to
(a+4)(a+4)
and then you use FOIL (first, outside, inside, last)
a^2 + 4a + 4a + 16
a^2 + 8a + 16
You don't put 16a, specifically because that's not how FOIL works. If you have any doubt, just expand it out like I just did.
2006-12-06 14:33:14 · answer #2 · answered by Puggy 7 · 0⤊ 0⤋
a^2 + 8a + 16 is a trinomial, because it has three terms of different degrees
2006-12-06 14:31:11 · answer #3 · answered by bgdddymtty 3 · 0⤊ 0⤋
(a+4)^2 use FOIL
a^2+4a+4a+16
a^2+8a+16
2006-12-06 14:31:27 · answer #4 · answered by yupchagee 7 · 0⤊ 0⤋
thats right.
(a+4)(a+4)
just use foil to distribute it into a quadratic form
which is a^2+8a+16
2006-12-06 14:32:45 · answer #5 · answered by jabber_wok 2 · 0⤊ 0⤋
itwill be (a)3+2(a)(4)+(4)^2
=a^2+8a+16
2006-12-06 14:33:46 · answer #6 · answered by raj 7 · 0⤊ 0⤋
x^2+10x+__25___ =(x+5)^2 4a^2+_12a___+9 = (2a+3)^2 y^2-_16y___+sixty 4 = (y-8)^2 9m^2-30m+_25___ = (3m-5)^2 additionally the element of a sq. is represented via a^2-14a+40 9 = (a-7)^2 exhibit the scale of the two factors in terms of a_(a-7)______________ exhibit the edge of the sq. in terms of a__4(a-7)___________
2016-12-11 03:49:11 · answer #7 · answered by Anonymous · 0⤊ 0⤋