Answer:
1 Use Difference of Squares:
a^2-b^2=(a+b)(a−b).
10(x^2-4^2)
2 Simplify 4^2 to 16
10(x^2 −16)
3 Expand by distributing terms.
10x^2 −160
Step-by-step explanation:
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§ALEX§
10x^2 - 160
10(x+4)(x-4)
=> 10[x^2 - 4^2]
=> 10[x^2 - 16]
=> 10x^2 - 160
