Q3 D of 52 Page 131

Let’s resolve into factors:

ax2 + (a2-1)x-a


ax2 + (a2-1)x-a


=ax2 + a2x-x-a


=ax(x + a)-1(x + a)


=(ax-1)(x + a)


∴ the factors of ax2 + (a2-1)x-a are (ax-1)(x + a)


More from this chapter

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3 B

Let’s resolve into factors:

x2 + 2ax + (a + b)(a-b)


 3 C

Let’s resolve into factors:

ax2-(a2 + 1)x + a


 3

Let’s resolve into factors:

ax2-(a2-2)x-2a


 3 F

Let’s resolve into factors:

a2 + 1-