Question

factorise 4-20b+25b²​

Answer 1

Answer:

Step-by-step explanation:

Here you go mate

Step 1

4-20b+25b²​  Question

Step 2

4-20b+25b²​ Flip sides

25b^2-20b+4

Step 3

25b^2-20b+4  Factor the equation

(5b-2)(5b-2)

Answer

(5b-2)(5b-2)

Hope this helps

Answer 2

Answer:

(2-5b)²

Step-by-step explanation:

(2)²-(2X2X5b)+(5b)²=(2+5b)²