Solve by Factorisation
4(a+b)²-7a-7b
Answers
Answered by
1
Step-by-step explanation:
Expand the square
4
(
+
)
2
−
7
−
7
4\left(a+b\right)^{2}-7a-7b
4(a+b)2−7a−7b
4
(
+
)
(
+
)
−
7
−
7
4(a+b)(a+b)-7a-7b
4(a+b)(a+b)−7a−7b
2
Distribute
4
(
+
)
(
+
)
−
7
−
7
4{\color{#c92786}{(a+b)(a+b)}}-7a-7b
4(a+b)(a+b)−7a−7b
4
(
(
+
)
+
(
+
)
)
−
7
−
7
4({\color{#c92786}{a(a+b)+b(a+b)}})-7a-7b
4(a(a+b)+b(a+b))−7a−7b
3
Distribute
4
(
(
+
)
+
(
+
)
)
−
7
−
7
4({\color{#c92786}{a(a+b)}}+b(a+b))-7a-7b
4(a(a+b)+b(a+b))−7a−7b
4
(
2
+
+
(
+
)
)
−
7
−
7
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