3 years ago

Hello people ~factorise↷ x^2 + 4x –21

Mathematics

1 answer:

EleoNora [17]3 years ago

8 0

Let's see

$\\ \rm\rightarrowtail x^2+4x-21$

$\\ \rm\rightarrowtail x^2+7x-3x-21$

$\\ \rm\rightarrowtail x(x+7)-3(x+7)$

$\\ \rm\rightarrowtail (x-3)(x+7)$

You might be interested in

Please help and explain, thanks so much. <br><br> 2x^3 y^8 / 4y^2

natta225 [31]

Answer:

$2 {x}^{3} {y}^{8} \div 4 {y}^{2} \\ = {x}^{3} {y}^{8} \div 2 {y}^{2} \\ = {x}^{3} {y}^{8 - 2} \div 2 \\ = {x}^{3} {y}^{6 } \div 2 \: \: \: ans$

Step-by-step explanation:

Plz make it brainlist answer your questions have been solved

7 0

3 years ago

What is uv + v u = –1 and v = –1.

Lina20 [59]

Answer = 0
-1(-1)=1
1 + -1 = 0

3 0

3 years ago

Read 2 more answers

8h + (-7.9d) - 14 + 5d - 3.4h

Fynjy0 [20]

☁️ Answer ☁️

So I got:

-2.9d + 4.6h - 14

Hope it helps.

Have a nice day hyung/noona!~ ￣▽￣❤️

7 0

3 years ago

Are x²y3 & 7x’yº like terms?

Neko [114]

Answer:

i think u should check ur equation ion think its correct mane!

Step-by-step explanation:

5 0

3 years ago

Expresión algebraica el cuadrado del cubo de la suma de dos números

bearhunter [10]

Answer:

El cuadrado de la suma de dos números es igual a (a + b) ² = a² + 2ab + b²Un producto notable: es una expresión matemática que conocemos ya el resultado, a pesar de la operación ser sencilla tenemos

3 0

3 years ago

Hello people ~factorise↷ x^2 + 4x –21​

Hello people ~factorise↷ x^2 + 4x –21