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Assoli18 [71]
3 years ago
12

What is the product (2x-1)(x+4)

Mathematics
2 answers:
Ostrovityanka [42]3 years ago
8 0
2x(x+4)-1(x+4)
2x^2+8x-x-4
2x^2+7x-4
dimaraw [331]3 years ago
7 0

Answer: 2x^2+7x-4.

Step-by-step explanation:

To find : The product of (2x-1)(x+4)

Using distributive property : a(b+c)=ab+ac , we have

(2x-1)(x+4)\\\\= (2x-1)x+(2x-1)4

Again , using distributive property : (b+c)a=ba+ca , we have

(2x-1)x+(2x-1)4=2x\cdot x+(-1)x+2x\cdot 4+(-1)4\\\\=2x^2-x+8x-4\\\\= 2x^2+7x-4

Hence, The product of (2x-1)(x+4) is 2x^2+7x-4.

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