Question

find the (5a+4b) (5a-4b) is​

Answer 1

$(5a) ^{2} - (4b) ^{2}$

$(5a) ^{2} - 4 ^{2} b ^{2}$

$(5a) ^{2} - 16b ^{2}$

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Answer 2

Step-by-step explanation:

(5a)

2

−(4b)

2

(5a) ^{2} - 4 ^{2} b ^{2}(5a)

2

−4

2

b

2

(5a) ^{2} - 16b ^{2}(5a)

2

−16b

2