1.7.1 Binomial expansion

Question 1

a.

Find the first three terms of the expansion of $(9+2x)−12\displaystyle (9 + 2x)^{-\frac{1}{2}}$ in ascending powers of $x$ , giving each coefficient in its simplest form.

[4]

b.

The expansion of

$a+bx9+2x\displaystyle \frac{a + bx}{\sqrt{9 + 2x}}$

in ascending powers of $x\,$ begins $\dots$

Find the value of $a\,$ and the value of $b$ .

[3]

1.7.1 Binomial expansion

1 2 3 4 5 6 7 8 9 10

Question 1

a.

Find the first three terms of the expansion of $(9+2x)−12\displaystyle (9 + 2x)^{-\frac{1}{2}}$ in ascending powers of $x$ , giving each coefficient in its simplest form.

[4]

b.

The expansion of

$a+bx9+2x\displaystyle \frac{a + bx}{\sqrt{9 + 2x}}$

in ascending powers of $x\,$ begins $\dots$

Find the value of $a\,$ and the value of $b$ .

[3]

1.7.1 Binomial expansion

Question 1

Markscheme

1.7.1 Binomial expansion

Question 1

Markscheme

1.7.1 Binomial expansion

Question 1

1.7.1 Binomial expansion Questions

1.7.1 Binomial expansion

Question 1

1.7.1 Binomial expansion Questions