Math, asked by funnyjokes, 3 months ago

multiply 2x²-2x by 3x

Answers

Answered by raunakrrj1256
0

Correct option is

B

10x

3

−11x

2

+19x+10

We have

(2x

2

−3x+5)×(5x+2)

(2x

2

−3x+5)×5x+(2x

2

−3x+5)×2

(10x

3

−15x

2

+25x)+(4x

2

−6x+10)

10x

3

−11x

2

+19x+10

Answered by rehan012774
0

Answer:

Simplify (4x2 – 4x – 7)(x + 3)

Here's what the multiplication looks like when it's done horizontally:

(4x2 – 4x – 7)(x + 3)

(4x2 – 4x – 7)(x) + (4x2 – 4x – 7)(3)

4x2(x) – 4x(x) – 7(x) + 4x2(3) – 4x(3) – 7(3)

4x3 – 4x2 – 7x + 12x2 – 12x – 21

4x3 – 4x2 + 12x2 – 7x – 12x – 21

4x3 + 8x2 – 19x – 21

That was painful! Now I'll do it vertically:

That was a lot easier! But, by either method, the answer is the same:

4x3 + 8x2 – 19x – 21

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