Answer:
1. (m + 7)²
2. (2x + 1)²
3. (3x + 5)²
4. (5x - y)²
5. (2a - 9)²
Step-by-step explanation:
solution for every PST(Perfect Square Trinomial):
find the square root of the first term and also last term
ex.: √m² = m
√49 = 7
then look at the second term of trinomial. copy its sign (wether positive or negative)
ex.: + 14m
sign: positive (+)
then place the square root of the first term, the sign and the square root of the last term respectively.
ex.: (m + 7)
m = 1st term
+ = sign
7 = last term
