Question

Fill in the blank
1. (a-b)^ =a^ .............. + b^
2.(x+2y)^= ..............+4y^
3. (a-7) ( ...............+.............)a^-49
4.(x+a)(x+b)=x^+(a+b)x+...............
5.(5m+3n) (5m-3n)=25m^-.................
please it's urgent​

Answer 1

Answer:

1. a^2+2ab+b^2

2.x^2+8xy+4y^2

3.a^2+14a+49

4.x^2+(a+b)x+ab

5.25m^2-9n^2

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