Find the following squares by using the identities `0.4p-0.5q)^2`

Find the following squares by using the identities (b-7)^2

Find the following squares by using the identities (6x^2-5y)^2

Find the following squares by using the identities (2xy+5y)^2

Find the following squares by using the identities (xy+3z)^2

Find the following squares by using the identities (2m/3 +3n/2)^2

Using identities,evaluate. 5.2^2

Using identities,evaluate. 102^2

Find the roots of the following quadratic equations , if they exists , by the method of completing the square. 2x^(2) + x- 4 =0

Find the roots of the following quadratic equations , if they exists , by the method of completing the square. 2x^(2) +x+4=0