factorise x²-8x-175
please help me fast
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Answer:
4 ± 13.82
Step-by-step explanation:
x²- 8x - 175
Using Quadratic formula ,
x = [ -b ± √(b² - 4ac) ]/2a
x = [ -(-8) ± √(-8² - 4(1)(-175))]/2(1)
x = [8 ± √(64 + 700)]/2
x = [8 ± √764]/2
x = (8 ± 27.64)/2
x = 8/2 ÷ 27.64/2
x = 4 ± 13.82
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