Help please! I don't understand this quite clearly.
2007-04-30 17:51:27 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
any perfect trinomial is going to follow the same pattern:
a^2 + 2ab + b^2
for example:
1) x^2 - 2*x*1 + 1
2) 4x^2 + 2*2x*y + y^2
2007-04-30 17:57:11 · answer #1 · answered by Ana 4 · 0⤊ 0⤋
A + B squared is A^2 + 2AB + B^2
If you can recognize this pattern, you can see which are perfect squares.
Like: x^2 + 2x +1 or 9y^2 +12yz + 4z^2
2007-05-01 00:57:12 · answer #2 · answered by a simple man 6 · 0⤊ 0⤋
(x+a)(x+a)=x^2+2ax+a^2
So the coefficient of x will be plus or minus 2 times the squre root of the constant term.
2007-05-01 00:55:30 · answer #3 · answered by bruinfan 7 · 0⤊ 0⤋
Just write on your paper "Because it is."
Might work, might not. Worth a shot.
lol sorry
2007-05-01 00:55:17 · answer #4 · answered by Sarah 2 · 0⤊ 1⤋