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QveST [7]
3 years ago
15

Expan and simplify (x+3) (x+5)

Mathematics
2 answers:
just olya [345]3 years ago
8 0

Answer:

x= 3, x=5   or x^2 + 8x + 15

Step-by-step explanation:

(x+3)(x+5)

(x*x)(x*5)(3*x)(3*5)

x^2 + 5x + 3x + 15

x^2 + 8x + 15

x+3 = 0       x+5 = 0

   -3   -3         -5   -5

x= -3            x= -5

Vadim26 [7]3 years ago
4 0

Distribute:

(+3)(+5)

(+5)+3(+5)

(+5)+3(+5)2+5+3(+5)

2+5+3(+5)2+5+3+15

Combine like terms:

2+5+3+152+8+15

Step-by-step explanation:

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Step-by-step explanation:

we have  ∠A = (2x − 30)° and ∠B = 4x, and we need to find measure of larger angle. And ∠A and ∠A are supplementary angles.

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So,  First we have to find the value of x. and then we can determine larger angle.

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