Question

plz answer 7,8 th fillups ​

Answer 1

$(y - x)a + (x - y)b \\ = (y - x)a - (y - x)b \\ = (y - x)(a - b)$

Hence the factors are y-x and a-b

$(a - b) \times (a - b) \\ = {(a - b)}^{2} \\ = {a}^{2} - 2ab + {b}^{2}$

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Answer 2

Answer:

your is in photo of seven and eight