Which from the given options is the factored form of the following
pressions.
4. 9a? - 49
a. (3x + 49)(3x - 1)
b. (3x - 1)(3x + 49)
c. (3x + 7)(3x + 7)
d. (3a + 7) (3a-7)
5.x²-9
a. (x + 3)(x + 3)
b. (x+3)(x-3)
c. (x - 3)(x - 3)
d. (3x + 3)(x - 1)
6. a' + 27
a. (a + 3) (a? - 3a + 9)
b. (a + 3) (a? + 3a + 9
c. (a -3) (a? - 3a - 9)
d. (a - 3) (a? - 3a + 9)
7. 64c-d3
a. (4c-d) (16c? + 4cd + d)
b. (40 + d) (160 + 4
c. (4c-d) (16c-4cd - d?)
d. (4c - d) (16C-40
x² -24x + 144
a. (x - 12)
b. (x + 12)
C. (12x - 12)
d.(12x + 12)
1 - 18m + 81m2
a. (1 - 9m)2
b. (1 + 9m)
c. (9 m)
d. (9 + m)
n the blank to complete the quadratic trinomial.​