Question

plz solve this fast​

Answer 1

Answer:

a

Step-by-step explanation:

1. (x+4)(x+10)

on multiplication

x² + 10x + 4x + 40 (looks like a²+(x+y)b + 2ab

x²+14x +40

2 (x+8)(x-10)

on multiplication

x²-10x+8x-80 ( looks like a²+ (x+y)b + ab)

x²- 2x -80

3

${y}^{2} + \frac{3}{2} \times {y}^{2} - \frac{3}{2}$

${y}^{2} - { \frac{3}{2} }^{2}$

by using (a-b)(a+b)= a²-b²

${y}^{2} - \frac{9}{4}$

4

$(3 - 2x)(3 + 2x)$

by using a-b a+b = a²-b²

${3}^{2} - {2x}^{2}$