Question

1) What are trinomials? Write one example.
2) Write the following algebraic expression in standard form.
45x + 25x²y3 – 42xy2- 2x4y2
3) Add 4x2 - 15x + 2 and -6x2 + 2x - 7
4) Subtract 5a²b2 + 3ab -7 from 8a2b2 + 8ab-9
5) Find the product of 3x - 5y and 2x + 3y
6) Divide 12x3y2– 24x’y4 + 36xⓇyby 6x?y?
7) Factorise 12x3y2 – 24x3y4 + 36x3y5
8) Factorise 64x4 – 225y4
9) Find the SI on Rs.18000 for 3 years at the rate of interest 5% per annum.
10)If x and y vary directly and x = 24 when y =18, find the value of x when y= 51.​

Answer 1

Answer:

1.Factoring Trinomials in the form x2 + bx + c

For example, to factor x2 + 7x +10, you are looking for two numbers whose sum is 7 (the coefficient of the middle term) and whose product is 10 (the last term). Look at factor pairs of 10: 1 and 10, 2 and 5.

2.I don't know Sorry

3.I don't know Sorry

4.I don't know Sorry

5. Answer is in photo

6.I don't know Sorry

7.I don't know Sorry

8.64x4-225y4 Second photo is answer

9.third photo is answer

10.Fourth photo is answer.

I don't know the answer of 2,3,4,5,6,7