Question

factorise the folowing by taking out common factor
$(y - 4)(x + 2) + (y - 4)(x + 1)$
$5a(2x - 4) - 2b(2x - 4) + (2x - 4)$
${25a}^{3} - {20a}^{4}b$
${15x}^{2}y - {24xy}^{2} + 18xy$
${21x}^{3} {y}^{3} - {28x}^{4} {y}^{3} - {14x}^{5} {y}^{2}$
$- 4(x + 2y) + 8(x + {2y)}^{2}$
these are the questions that given in formulas...please help me with full explanation...
please if you know the answer then after answer otherwise I will report who answer silly things​

Answer 1

Answer:

if you give 5 points who will answer your question

Answer 2

Answer:

Step-by-step explanation: