Question

25. Find the product *
(9x? – x+15)(x² + 2) + (r? – 5x +8)(x2 – 3​

Answer 1

Answer:

Add the following expressions:

(i) 5x, 7x, −6x

(ii)

3

5

x,

2

3

x,

-4

5

x

(iii) 5a2b, −8a2b, 7a2b

(iv)

3

4

x2,5x2,-3x2,-

1

4

x2

(v) x − 3y + 4z, y − 2x − 8z, 5x − 2y − 3z

(vi) 2x2 − 3y2, 5x2 + 6y2, − 3x2 − 4y2

(vii) 5x − 2x2 − 8, 8x2 − 7x − 9, 3 + 7x2 − 2x

(viii)

2

3

a-

4

5

b+

3

5

c,-

3

4

a-

5

2

b+

2

3

c,

5

2

a+

7

4

b-

5

6

c

(ix)

8

5

x+

11

7

y+

9

4

xy,-

3

2

x-

5

3

y-

9

5

xy

(x)

3

2

x3-

1

4

x2+

5

3

,-

5

4

x3+

3

5

x2-x+

1

5

,-x2+

3

8

x-

8

15

ANSWER: