Algebra Please Check answers
posted by Rae Rae .
Directions: Determine whether each trinomial is a perfect square. If so, factor it.
Directions: Determine whether each binomial is the difference of squares. If so, factor it.
all you had to do is expand your answer to see that it can't be right.
should have been (2a + 1)^2
#7, your answer is not in factored form, it shows a subtraction, not a multiplication.
just look at your answer!
how can (m+4)-(5+n) possible be 16m^2-25n^2 ????
should have been (4m+5n)(4m-5n)
in #8, first take out a "common factor" of 2, then you should see the difference of squares
= 2(4a^2 - 9) = 2(2a+3)(2a-3)
again, how could your answer of
(7+ab)-(7-ab) possibly turn into 8a^2 - 18 ??? And where did the b come from ???