plz solve this fast
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Answered by
0
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
by using (a-b)(a+b)= a²-b²
4
by using a-b a+b = a²-b²
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