Question

4) simplify the following using p²- q² = (p+q) (p-q) (a) 15²-10²​

Answer 1

Answer:

15² -10² = (15+10) (15-10)

= 25 × 5

= 125

Answer 2

Step-by-step explanation:

$given \: equation \: \\ = > p {}^{2} - q {}^{2} = (p - q)(p + q) \\ given \: p = 15 \: and \: q = 10 \\ let \: us \: start \\ 15 {}^{2} - 10 {}^{2} = (15 - 10)(15 + 10) \\ 225 - 100 = 5 \times 25 \\ 125 = 125 \\ hence \: prooved$

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