moon1697 moon1697

22-12-2021
Mathematics

contestada

6. Multiply: i) 3x (5x+8y)
ii) 4x (3x2 + 5x-7)
iii) (3x+4y) (2x-7y)
iv) (2-3a) (2a2-3a+7)

Respuesta :

Yang100 Yang100

22-12-2021

Answer:

Step-by-step explanation:

3x(5x+8y)=15x^2+24xy

4x(3x^2+5x-7)=12x^3+20x^2-28x

(3x+4y)(2x-7y)=6x^2+8xy-21xy-28y^2=6x^2-13xy-28y^2

(2-3a)(2a^2-3a+7)=4a^2-6a+14-6a^3+9a^2-21a=-6a^3+13a^2-27a+14

Answer Link

Otras preguntas

Which of the following words correctly describe a triangle with two 45° angles? check all that apply.

What is the slope of the graph?

Greatest integer function

How do you take a scratch off a plastic clear phone case anyone know please tell me

2. King Tutankhamun ruled in Egypt

Which of the following elements has the greatest atomic radius? Al S Si C

507+372 is the same as 500 +

Find a formula for the product P of the solutions of the quadratic equation ax²+bx+c=0 .

A car travels the first 50km of its journey at an average speed of 25m/s snd the next 120km at an average speed of 80km/h. The car completes the lat part of its

Let u = 〈1,5〉 and v = 〈3, −2〉. Write each vector in component form and draw an arrow to represent the vector. a. u + v b. u − v c. 2u + 3v