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3 years ago

Write √ 45 + √ 20 in the form k √ 5

Mathematics

2 answers:

prohojiy [21]3 years ago

3 0

Answer:

5sqrt(5)

Step-by-step explanation:

sqrt(45)+sqrt(20)

sqrt(9*5)+sqrt(4*5)

sqrt(9)sqrt(5)+sqrt(4)sqrt(5)

3sqrt(5)+2sqrt(5)

(3+2)sqrt(5)

5sqrt(5)

BabaBlast [244]3 years ago

3 0

√45 = √9×5 = 3√5

√20 = √4×5 = 2√5

____________________

√45 + √20 ===》 3√5 + 2√5 = 5√5

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