Name:			Date:
Factoring Perfect Square Trinomials.

1) $y^2+1.8y+0.81$	2) $81m^2+126m+49$
3) $m^2+18m+81$	4) $y^2-20y+100$
5) $y^2+12y+36$	6) $m^2-22m+121$
7) $9a^2-36a+36$	8) $81n^2-36n+4$
9) $64m^2-96m+36$	10) $\frac{1}{16}{b}^2-2b+16$
11) $12a^3+24a^2+12a$	12) $a^2-8x+16$
13) $x^2{y}^4+10x{y}^2+25$	14) $a^2{t}^4-12a{t}^2+36$
15) $81a^2+198ab+121b^2$	16) $m^2{t}^4-10m{t}^2+25$
17) $a^2-12ab+36b^2$	18) $p^2-22pq+121q^2$
19) $m^2{n}^2-22mno+121o^2$	20) $x^2{y}^2-10xyz+25z^2$

 

Answers:

1) ${(y+0.9)}^2$	2) ${(9m+7)}^2$
3) ${(m+9)}^2$	4) ${(y-10)}^2$
5) ${(y+6)}^2$	6) ${(m-11)}^2$
7) ${(3a-6)}^2$	8) ${(9n-2)}^2$
9) ${(8m-6)}^2$	10) ${(\frac{1}{4}b-4)}^2$
11) $3a{(2a+2)}^2$	12) ${(x-4)}^2$
13) ${(x{y}^2+5)}^2$	14) ${(a{t}^2-6)}^2$
15) ${(9a+11b)}^2$	16) ${(m{t}^2-5)}^2$
17) ${(a-6b)}^2$	18) ${(p-11q)}^2$
19) ${(mn-11o)}^2$	20) ${(xy-5z)}^2$