Question

Find the value (x+4) (x+5)​

Answer 1

Answer:

$\huge \boxed{(x + 4)(x + 5)}$

$\bold\red{ = {x}^{2} + (4 + 5)x + 4 \times 5 }$

$\bold\blue{ {x}^{2} + (9)x + 20 }$

$\bold \purple{ {x}^{2} + 9x + 20}$

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Note:-

$\bold\green{(x+a)(x+b) = {x}^{2} + (a + b)x + a \times b }$

$\bold\orange{(x+a)(x+b) = {x}^{2} + (a + b)x + ab}$

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Answer 2

Answer:

x²+9x+20

Step-by-step explanation:

(x+4)(x+5)

x*(x+5)+4(x+5)

x*x +x*5 +4*x + 5*4

x² + 5x + 4x + 20

x² + 9x + 20

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