Answer:
Step-by-step explanation:
The terms will be multiplied in order to get the simplified polynomials.
a. 6(x + 7)(x + 2)
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The simplified form of 6(x + 7)(x + 2) is 
b. (2y – 5)^2
Using the formula: 

The simplified form is: 
c. (5x + 4y)(2x - y)

The simplified form of (5x + 4y)(2x - y) is 
d. (3x + 7)(3x – 7)
Using the formula: 

The simplified form of (3x + 7)(3x – 7) is 
e. (t + 2) – (4t +9) – t

The simplified form of (t + 2) – (4t +9) – t is 
Hence,
a. The simplified form of 6(x + 7)(x + 2) is 
b. The simplified form is: 
c. The simplified form of (5x + 4y)(2x - y) is 
d. The simplified form of (3x + 7)(3x – 7) is 
e. The simplified form of (t + 2) – (4t +9) – t is 