Question

Please solve all the Problems!​

Answer 1

Answer:

(2a+5)(2a-5).

Step-by-step explanation:

4a2-25

(2a)2-(5)2

(2a-5)2

(2a+5)(2a-5).

Answer 2

Answer:

p^*2-p-42=

put p= 1

then, 1^*2-1-42= 1-1-42= 0-42= -42