Factorise x²+7x-30
plz give the right answer
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Answers
Answered by
1
Answer:
How to solve your problem
2
+
7
−
3
0
x^{2}+7x-30
x2+7x−30
Grouping
1
Use the sum-product pattern
2
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7
−
3
0
x^{2}+{\color{#c92786}{7x}}-30
x2+7x−30
2
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1
0
−
3
−
3
0
x^{2}+{\color{#c92786}{10x}}{\color{#c92786}{-3x}}-30
x2+10x−3x−30
2
Common factor from the two pairs
2
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1
0
−
3
−
3
0
x^{2}+10x-3x-30
x2+10x−3x−30
(
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1
0
)
−
3
(
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1
0
)
x(x+10)-3(x+10)
x(x+10)−3(x+10)
3
Rewrite in factored form
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1
0
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−
3
(
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1
0
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x(x+10)-3(x+10)
x(x+10)−3(x+10)
(
−
3
)
(
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1
0
)
(x-3)(x+10)
(x−3)(x+10)
Solution
(
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3
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(
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1
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Step-by-step explanation:
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Answered by
1
=x²+10x-3x-30
=x(x+10)-3(x+10)
=(x-3)(x-10)
Thanks
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