Question

7. (a) (i) Expand
$( {2 + x)}^{5}$

(ii) Use your answer to part (i) to find the integers a and b for which
$(2 + \sqrt{3})^{7}$
can be expressed in the form
$a + b \sqrt{3}$
.
(b) Find the coefficient of
$x$
in the expansion of.
$( {x - \frac{4}{x} }) {}^{7}$
​

Answer 1

Answer:

7. (a) (i) Expand

$( {2 + x)}^{5}$

(ii) Use your answer to part (i) to find the integers a and b for which

$(2 + \sqrt{3})^{7}$

can be expressed in the form

$a + b \sqrt{3}$

.

(b) Find the coefficient of

[7. (a) (i) Expand

$( {2 + x)}^{5}$

(ii) Use your answer to part (i) to find the integers a and b for which

$(2 + \sqrt{3})^{7}$

can be expressed in the form

$a + b \sqrt{3}$

.

(b) Find the coefficient of

$x$7. (a) (i) Expand

$( {2 + x)}^{5}$

(ii) Use your answer to part (i) to find the integers a and b for which

$(2 + \sqrt{3})^{7}$

can be expressed in the form

$a + b \sqrt{3}$

.7. (a) (i) Expand

$( {2 + x)}^{5}$

(ii) Use 7.7. (a) (i) Expand

$( {2 + x)}^{5}$

(ii) Use your answer to part (i) to find the integers a and b for which

$(2 + \sqrt{3})^{7}$

can be expressed in the form

$a + b \sqrt{3}$

.

(b) Find the coefficient of

$x$

in the expansion of.

$( {x - \frac{4}{x} }) {}^{7}$

(a) (i) Expand

$( {2 + x)}^{5}$

(ii) Use your answer to part (i) to find the integers a and b for which

$(2 + \sqrt{3})^{7}$

can be expressed in the form

$a + b \sqrt{3}$

.

(b) Find the coefficient of

$x$

in the expansion of.

$( {x - \frac{4}{x} }) {}^{7}$

answer to part (i) to find the integers a and b for which

$(2 + \sqrt{3})^{7}$

can be expressed in the form

$a + b \sqrt{3}$

.

(b) Find the coefficient of

$x$

in the expansion of.

$( {x - \frac{4}{x} }) {}^{7}$

(b) Find the coefficient of

$x$

in the expansion of.

$( {x - \frac{4}{x} }) {}^{7}$

in the expansion of.

$( {x - \frac{4}{x} }) {}^{7}$

]

in the expansion of.

$( {x - \frac{4}{x} }) {}^{7}$